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Coronavirus (COVID-19) is a highly infectious respiratory disease which spread can be effectively curbed by wearing facial masks, especially N95 and surgical masks. In this paper, we develop a stylised game-theoretical model to evaluate the impacts of producing and selling masks on supply chain profits, safety index and consumer and social welfare. Firstly, we find that as the infection probability without protection (IPWP) increases, both the retail price and demand for these masks will increase. When the IPWP is sufficiently low, those consumers who want to purchase masks are more likely to purchase N95 masks, but when the IPWP increases, surgical masks are more popular amongst consumers. Secondly, we develop a safety index that indicates the effectiveness of using masks in preventing respiratory disease infection. This index is especially crucial in cases where the IPWP is moderate; in other words, recommending to wear masks is particularly important when the IPWP is moderate. We also examine the impacts of government involvement in handling the outbreak of respiratory diseases. Providing consumer subsidies and promoting the social mask enterprise can effectively combat respiratory diseases under different conditions. Our results can be used for combating COVID-19 and preparing for future health crisess. [ABSTRACT FROM AUTHOR]

This study investigates the role of linguistic and semiotic resources in the construction of exclusionary discourses amidst the COVID-19 semiotic landscape. Drawing on systematic observations of and engagement with Weibo and Twitter from February 2020 to April 2021, the paper adopts a geosemiotic perspective and analyses social media posts as publicly displayed language items. This study's findings suggest that exclusion is embedded in perpetual ideologies of distrust and xenophobia and constructed by languages and material objects drawn from both online and offline spaces. More importantly, politicised signage in the COVID-19 semiotic landscape, although ephemeral in nature, are configured to prohibit mobility and materialise playfulness. By focusing on the emplacement of exclusionary discourses at the interface between the online and the offline, this study moves beyond terrestrial semiotic landscapes to capture fleeting semiotic practices during the pandemic. The paper also argues for a semiotic assemblage perspective to account for the implications of resemiotisation in the online environment. [ABSTRACT FROM AUTHOR]

In the latest issue's "Editor's Note" of EASTS, Wen-hua Kuo made a call to East Asian science studies scholars to commit to an archeology of the social and technical infrastructure of epidemics. Coincidently, ten historians and sociologists working on science, technology, medicine, and environment with a focus on China, Japan, Taiwan, Singapore, and South Korea had just begun a collective effort to understand how face masks had become the most important part of the current pandemic governance in East Asia. As its first step, a virtual workshop, "The Socio-Material History of Masked Societies in East Asia," was held at the Max-Planck Institute for the History of Science on 26 October 2020. This forum aims to introduce the virtual meeting's outcome to the wider EASTS community and encourages them to engage with the collaborative enterprise to investigate the history of masks. All papers focus on the socio-material dimension of masks while problematizing current culturalist explanatory narratives about "masked societies" in East Asia. By doing so, the papers show how mask use is closely linked to heterogenous but interconnected entanglements of environmental governance, political movements, and risk cultures in East Asian polities. It interrogates these relationships in the context of scientific controversies and quarantine regimes. [ABSTRACT FROM AUTHOR]

This paper addresses the topic of social manufacturing, with the aim of understanding the key features of such a new manufacturing, network-based model, its enabling factors and the reasons-why a company should join and/or establish it. Building on the literature about social manufacturing and disruptive innovation, we develop a new framework to address our research questions. During the COVID-19 pandemic, many Italian manufacturing companies quickly adopted a network-based production approach, to provide a rapid response to healthcare organizations needing surgical masks, sanitisers, and pieces of equipment like ventilators. We discuss this transformation with two companies, Ferrari Cars and Isinnova, which developed a social manufacturing network that was successful in an emergency situation. Building on the empirical evidence stemming from these case-studies, we explain how and to what extent this emergency model could become stable and profitable in a post-pandemic scenario, creating economic value and opening up business opportunities. [ABSTRACT FROM AUTHOR]

This paper addresses the experiences of US child welfare professionals during the COVID pandemic. Using an online survey, we report on a convenience sample of 444 child welfare workers. The majority reported receiving adequate guidance on staying safe; 86.3% were given access to face masks. Workers reported 75.8% of clients used masks; 10.7% reported contracting COVID through work. About 80% worried that child clients were more at-risk. Workers who felt the most supported and least at-risk were those with stay-at-home orders. Results are discussed in terms of supporting child welfare professionals during periods of crisis. [ABSTRACT FROM AUTHOR]

Injurant anthropomorphism is defined as the anthropomorphism of disease-causing agents with humanlike characteristics, emotions, intentions, or behavior. More and more health product brands and health care organizations are depicting disease causing injurants (e.g., enterovirus or PM2.5 pollutants) with human characteristics in their advertising. However, the effect of injurant anthropomorphism on consumer perceptions and decision making remains unclear. This paper investigates how consumers feel and react to injurant anthropomorphism in the context of heath product promotion. The results of four lab and field experiments show that participants will develop a higher intention to engage in protective behavior (e.g., use a PM 2.5 anti-pollution mask) when the injurant is anthropomorphized than when it is not. However, the effect disappears if the injurant triggers a high behavioral immune response (BIR), or is imbued with a crying humanlike face. In addition, the perceived threat of disease is found to mediate this effect. Briefly, the present study contributes to the health communication literature and real-world practices by systematically examining the impact of injurant anthropomorphism on the health protective response, the process through which it exerts influence, or the boundary conditions for the effect. [ABSTRACT FROM AUTHOR]

During the unprecedented and rapid spread of the coronavirus disease-2019 (COVID-19) around the World, students have been concerned about the disease as much as the rest of the global community. As a real-world problem, the COVID-19 pandemic with many different debatable facets has social and scientific components, impacts society, and shows socioscientific issue characteristics. The pandemic blew up a debate about wearing or not wearing a face mask against infection and occupied the world agenda for nearly six months. After the World Health Organization (WHO) supports wearing face masks, a new debate on whether to wear fabric or a medical mask to protect public health started. Depending on that debate, a Perspective-Evidence Link diagram activity is designed for high school students and presented in this paper. The designed activity uses two different perspectives related to that debate and texts providing pieces of evidence for these perspectives. Students are expected to make different types of connections indicating the support/contradiction/irrelevancy of these texts to each perspective while explaining their reasons for selecting different connection types. In addition to explaining the details of how to use the designed COVID-19-Perspective-Evidence Link diagram as online activity, this paper makes recommendations for classroom usage to help teachers use it in a productive manner. [ABSTRACT FROM AUTHOR]

The COVID-19 pandemic is one of the rarest events of global crises where a viral pathogen infiltrates every part of the world, leaving every country face an inevitable threat of having to lock down major cities and economic hubs and put firm restrictions on citizens thus slowing down the economy. The risk of removal of lockdowns is the emergence of new waves of a pandemic causing a surge in new cases. These facts necessitate the containment of the virus when the lockdowns end. Wearing masks in crowded places can help restrict the spread of the virus through minuscule droplets in the air. Through the automatic detection, enumeration, and localisation of masks from closed-circuit television footage, it is possible to keep violations of post-COVID regulations in check. In this paper, we leverage the Single-Shot Detection (SSD) framework through different base convolutional neural networks (CNNs) namely VGG16, VGG19, ResNet50, DenseNet121, MobileNetV2, and Xception to compare performance metrics attained by the different variations of the SSD and determine the efficacies for the best base network model for automatic mask detection in a post COVID world. We find that Xception performs best among all the other models in terms of mean average precision. [ABSTRACT FROM AUTHOR]

The pandemic spreading of the COVID-19 virus has led to the global need to introduce, often by law, the medical face mask, which can undoubtedly be considered as "the object of 2020." In a few months, most human faces around the world in the public space, but also often in the private space, have been covered with various kinds of protective masks. Very soon, these objects have become the centre of several discursive productions, going from medical reports to media coverage, from artistic representations to ironic memes. The medical face mask was not totally new in the west, where it was already present in special circumstances, like dentists' studios or emergency rooms, and was quite familiar in the east, especially in Japan, China, and Korea. Yet such massive introduction changed the meaning of the medical face mask in every context. Old habits were reconfigured or clashed with the new ones, giving rise to a novel syntax, semantics, and pragmatics of the human face in conjunction with this device and in the context of the global pandemic. The present paper offers an introduction to a semiotic mapping of such radical cultural change and its likely consequences. [ABSTRACT FROM AUTHOR]

The onset of the COVID-19 pandemic has attracted significant attention on social media platforms as these platforms provide users unparalleled access to 'information' from around the globe. In spite of demographic differences, people have been expressing and shaping their opinions using social media on topics ranging from the plight of migrant workers to vaccine development. However, the social media induced polarisation owing to selective online exposure to information during the COVID-19 pandemic has been a major cause of concern for countries across the world. In this paper, we analyse the temporal dynamics of polarisation in online discourse related to the COVID-19. We use random network theory-based simulation to investigate the evolution of opinion formation in comments posted on different COVID-19-related YouTube videos. Our findings reveal that as the pandemic unfolded, the extent of polarisation in the online discourse increased with time. We validate our experimental model using real-world complex networks and compare consensus formation on these networks with equivalent random networks. This study has several implications as polarisation around socio-cultural issues in crises such as pandemic can exacerbate the social divide. The framework proposed in this study can aid regulatory agencies to take required actions and mitigate social media-induced polarisation. [ABSTRACT FROM AUTHOR]

The coronavirus outbreak required, among many changes and restrictions, a sudden and abrupt transition to online psychotherapy. This transition presented especially huge challenges to child psychotherapists. But as weeks and months have passed, and the virus has stayed with us, as our state of crisis has become routine, we are facing new and even greater challenges. We are back to the clinic with our young patients, but we are doing our therapeutic work while facing the danger of infection, wearing face masks, and being required to keep physical distance from each other. At the same time, children and parents, as well as the therapist herself, suffer from the consequences of the prolonged situation of crisis: there is anxiety, depression, and what seems worst of all, a sinking into apathy and indifference. Building on the evocative paper by Betty Joseph Thinking about the playroom, I will offer some preliminary insights into this (almost) impossible situation, in the context of our effort to keep our work, our patients and ourselves, alive and well. [ABSTRACT FROM AUTHOR]

The outbreak of COVID-19 was first experienced in Wuhan City, China, during December 2019 before it rapidly spread over globally. This paper has proposed a mathematical model for studying its transmission dynamics in the presence of face mask wearing and hospitalization services of human population in Tanzania. Disease-free and endemic equilibria were determined and subsequently their local and global stabilities were carried out. The trace-determinant approach was used in the local stability of disease-free equilibrium point while Lyapunov function technique was used to determine the global stability of both disease-free and endemic equilibrium points. Basic reproduction number, R 0 , was determined in which its numerical results revealed that, in the presence of face masks wearing and medication services or hospitalization as preventive measure for its transmission, R 0 = 0.698 while in their absence R 0 = 3.8. This supports its analytical solution that the disease-free equilibrium point E 0 is asymptotically stable whenever R 0 < 1 , while endemic equilibrium point E ∗ is globally asymptotically stable for R 0 > 1. Therefore, this paper proves the necessity of face masks wearing and hospitalization services to COVID-19 patients to contain the disease spread to the population. [ABSTRACT FROM AUTHOR]

Customer opinions on a product or retailer can be assessed through analyzing their textual reviews submitted to online communities. While the attitudinal information of a text post can be gauged by studying the sentiment words used, a method has to be sought for more effectively evaluating the sentiment strengths, because different writers may have varied interpretations on a word's sentiment. The objective of this paper is to develop a new integrated approach by adopting Sentiment Analysis and Evidential Reasoning for the online retailers' timely evaluation of the public sentiments toward different product alternatives. The finding of the study has established the benefit of efficiently evaluating the customers' feedback toward products and monitoring the changes of customer preferences on product attributes over time. The results obtained from the proposed approach are superiority to other decision-making tools. [ABSTRACT FROM AUTHOR]

Novel, public behaviors, such as masking, should be susceptible to normative influence. This paper advances the theory of normative social behavior by considering a new set of moderators of normative influence — superdiffuser traits — and by clarifying the antecedents and consequences of exposure to collective norms. We use data from a two-wave survey of a cohort living in one U.S. county during the pandemic (N = 913) to assess normative effects on masking. We also used a bipartite network (based on people shopping for food in the same stores) to examine exposure to collective norms. The results show different superdiffuser traits have distinct effects on the relationship between perceived injunctive norms and masking intentions. Exposure to collective norms influences masking, but this influence depends on how people interact with their social environments. Network analysis shows that behavioral homophily is a significant predictor of selective exposure to collective norms earlier (but not later) in the pandemic. Implications for understanding normative influence in a context where opinion leadership matters are discussed. [ABSTRACT FROM AUTHOR]

Wearing a face mask is one of the effective barriers against the coronavirus COVID-19 pandemic. It offers protection according to the World Health Organization and many medical papers. This paper proposes a method for masked face recognition in order to force the population to put on masks and reduce the COVID-19 pandemic in the world. The Viola-Jones algorithm is used to detect the face, and the Histogram of Oriented Gradients (HOG) technique was used to extract the relevant features from face images. The performance of the proposed algorithm is analysed for different data using two common image classification methods, including support vector machines and K Nearest Neighbor (KNN) algorithm for machine learning, which are used to classify the feature vectors. Their performance was compared and evaluated using accuracy. In this case, the experimental result shows that the support vector machine classifier achieved the highest accuracy and surpasses the KNN method in mask detection with an accuracy of 99.43%. [ABSTRACT FROM AUTHOR]

The paper is about Marica, a patient diagnosed with a severe form of Cutaneous T-cell lymphoma. This condition necessitated a sequel of surgical procedures on her face that led to a real transformation of her face's sensory balance and to sensory changes in other parts of her body. The impairment of affective regulation and of her subjective experience of her body followed and generated in her a depressive withdrawal and a deep psychic pain. Moreover, Mrs. M. was forced to cover her face with a mask. This condition, especially her use of a face mask and her social withdrawal, intersected with the month of March 2020 and the explosion of the Covid-19 pandemic in Italy and in the world. During our sessions, we explored the change in her feelings of shame and mortification in being seen in the hopes of helping her gain more positive regulation. The emotional derailment in being seen that had so far damaged her subjective feeling of "inhabiting her own body" found an emotional holding in the experience of mandatory face mask wearing and the lockdown. These requirements favored our on-line remote sessions and gave rise to new and generative narratives. [ABSTRACT FROM AUTHOR]

The outbreak of COVID-19 has attracted attention from all around the world. Governments and institutions have adopted ways to fight COVID-19, but its prevalence is still strong. The SIR model has important reference value for the novel coronavirus epidemic, offering both preventive measures and the ability to predict future trends. Based on an analysis of the classical epidemiological SIR model along with key parameters, this paper aims to analyze the patterns of COVID-19, to discuss potential anti-COVID-19 measures, and to explain why we need to conduct appropriate measures against COVID-19. The use of the SIR model can play an important role in public health emergencies. Among the parameters of the SIR model, the contact ratio and the reproduction ratio are the factors that have the potential to mitigate the consequences of COVID-19. Anti-COVID-19 measures include wearing a mask, washing one's hands, keeping social distance, and staying at home if possible. [ABSTRACT FROM AUTHOR]

This paper creatively re-thinks Masked Masterpieces, a COVID-19 public art fundraising initiative for financially at-risk students, organized by Stellenbosch University (SU) and underwritten by donors. The project features five portraits by famous South African artists, re-purposed with protective masks, and installed in large-scale reproductions around Stellenbosch town. In the paper, Masked Masterpieces serves as a generative critical prompt: not for a simplistic 'unmasking,' but for a female scholar's process of thinking through 'the fold,' an 'en/folding' engagement that turns and returns, erratically reviewing difficult, overlapping subjects linked to masking and mastery. In exploring both the substance and the shape of my thought process, I draw loose inspiration from innovations in mixed-materials structural design, where 'folded surfaces ... respond to spatial inquiries by transforming not into aggregates of fragments but into catalytically interconnected elements' (Vyzoviti and Sotiriou 524). [ABSTRACT FROM AUTHOR]

In the context of the COVID-19 pandemic, masks and the act of masking have become emotive subjects for social and political debate. In Brazil, one of the countries most severely affected by the pandemic, the seemingly mundane act of mask-wearing has become part of a deep social, political and economic crisis at the centre of which is the far-right president Jair Bolsonaro. In this paper we explore the politics of (un)masking in Brazil from three vantage points in which the mask serves to dramatise the country's current moment. Firstly, we trace the connections and disjunctions between the politics of mask-wearing and the genealogies of hygienist policies associated with the modern aspirations of the Brazilian republic. Secondly, we consider how masks are incorporated into the everyday life of the city through popular economies, which reveal the potentialities and limitations of work beyond the modern ideals of waged labour. Finally, we explore the incorporation of masks in urban street-art. We approach graffiti and murals as situated performances of symbolic resistance that contest and reveal the incoherences of Bolsonaro's anti-science discourse. In tandem, these three perspectives foreground practices of (un)masking that expose long-standing tensions and new contemporary challenges that characterise the politics of a 'crisis society'. [ABSTRACT FROM AUTHOR]

Public health lessons from one pandemic become the planning assumptions for the next one. Aotearoa New Zealand's 2017 pandemic plan was derived from past experience of influenza. When Covid-19 emerged as a major global health threat, it took time for the realisation to crystallise that this infection was so different from influenza that it required a completely new pandemic response strategy. In this paper we describe how early evidence about SARS-CoV-2 transmission from China led to the adoption of an elimination strategy in Aotearoa New Zealand, making it the first country to choose elimination as a specific policy response. We discuss how further evidence has shaped the selection and design of Covid-19 pandemic control measures such as border restrictions, case and contact management, hygiene practices and use of face masks, physical distancing, and vaccines. This experience demonstrates the need for a different approach to the design of the next national pandemic plan. We identify key early evidence that will be required to develop a flexible and appropriate public health response to a new pandemic threat. We present a framework for a new pandemic plan that aims to learn from the Covid-19 experience by making as few limiting assumptions as possible. [ABSTRACT FROM AUTHOR]

Masks, now recommended and worn by a growing proportion of the world's population, have reflected various perceived meaning across time. This paper provides a brief history of the socio-cultural perceptions attached to wearing a mask by surveying how masks were perceived in ancient Greece and Rome, the origins of medical masks, and the ascribed socio-cultural meaning of masks during the COVID-19 pandemic. The use of a mask has historically diverse perceived meanings; currently, wearing a mask communicates a bipolar socio-cultural meaning and a nuanced, divisive symbology. To some, masks communicate a belief in medical science and a desire to protect one's neighbor from contagion. To others, a mask communicates oppression, government overreach, and a skepticism toward established scientific principles. It is the mask's ability to signal a deception, or extrapolated more broadly, a value system, that is highly relevant to current public health guidelines encouraging mask use to decrease the transmission of SARS-CoV-2, the novel coronavirus responsible for the COVID-19 pandemic. Public health officials and providers should utilize evidence-based health communication strategies when findings warrant a reversed recommendation of a symbol (such as masks) with a legacy of socio-cultural underpinnings that are deep-seated, complex, and emotional. [ABSTRACT FROM AUTHOR]

The COVID-19 epidemic has created a global fear for humanity. Despite technological advancement, the use of face masks, hand gloves, and sanitizers are the only available preventives measures to stop the spread and transmission of coronavirus. Healthcare providers and medical staffs are always at risk of infection as they deal with the infected person at the frontline. The safety of health care workers is essential as the number of infected health care works is increasing day by day. A detailed literature review is done on a previous epidemic outbreak and COVID-19 by using suitable keywords on SCOPUS. During the analysis of literature, several challenges were found that restrict the operation of the health care workers and cause safety issues for them. This research paper aims to identify the challenges faced by healthcare sectors in dealing with this epidemic outbreak and to propose the potential solutions in terms of popular technologies like AI and IoT by doing a critical analysis of literature. The study contributes by identifying the issues and categorizing them into physical, operational, resource-based, organizational, technological, and external health care challenges. Further, suggestions and future research direction concerning epidemic control are explained for practitioners and academicians. [ABSTRACT FROM AUTHOR]

The habit of finger-licking is an insanitary habit observed everywhere including hospital wards and other medical facilities, among providers and other staff members. It is an enduring habit that has been present before and during the pandemic and will continue unless serious notice of it is taken. Herein, we illustrate the risks imposed by this everyday habit on individuals practicing it and on surrounding people, we describe the challenges with prior attempts to defeat this habit, and we explain how the face mask can eliminate this ever-lasting habit. [ABSTRACT FROM AUTHOR]

The coronavirus pandemic (COVID-19) threatens people's health. During the COVID-19 outbreak, people are encouraged to wear masks to reduce the spread of the virus. With the strong demand for masks, it has come a boom in counterfeit production. Combating counterfeit masks is vital and urgent to reduce the risks for public health. Motivated by the actual practices during the COVID-19, we examine how quality inspection and blockchain adoption help combat counterfeit masks. We find that quality inspection may not be always effective, as the government will tolerate the presence of counterfeit masks if the presence of the counterfeits is not significant. Comparing quality inspection with blockchain adoption, when the spread of COVID-19 is mild, authentic mask sellers may be encouraged to use the blockchain technology, which can increase their profits and reduce the social health risk. Furthermore, we extend our model to investigate the impacts of endogenous quality. Both quality inspection and blockchain adoption can induce low-quality mask sellers to enhance thequality level. When the number of counterfeit masks is increasing, encouraging the high-quality mask sellers to adopt the blockchain technology is effective to reduce social health risk when the spread of the coronavirus is rapid. [ABSTRACT FROM AUTHOR]

Disposable face masks are among the personal protective equipment (PPE) that highly contribute to protecting people in the context of the current COVID-19 pandemic. Health authorities recommend wearing a mask as a barrier measure to limit the spread of viral respiratory diseases. During the first waves of the pandemic, besides professional high-quality PPE, decontaminated disposable mask reuse and homemade cloth masks were allowed due to scarcities. This work introduces a simple method based on-time history of the differential pressure, and an easy to use the setup for the testing of different kinds of respiratory protective masks for the purposes of quality control and evaluation of air permeability performance. The standard mask testing method and the new proposed approach were then used to evaluate the effect of machine washing on the widely used type of disposable masks; namely the surgical (medical) face masks. The objective is to determine the number of acceptable washing cycles that this kind of mask can withstand before losing its performance in terms of breathability and airflow resistance. Other quality characteristics such as material (fibres) degradation and hydrophobicity are investigated. Degradation mechanisms due to washing cycles for the different mask constituent layers were studied by scanning electron microscopy (SEM) imaging. This work is an attempt to contribute to the determination of the reusability threshold of general-purpose disposable surgical type face masks thereby contributing to the reduction of environmental concerns. Results in terms of the studied above parameters suggest limiting the reuse of standard type surgical masks to only one machine washing cycle. [ABSTRACT FROM AUTHOR]

In this study, we focus on ripple effect mitigation capability of the Indian pharmaceutical distribution network during disruptions like COVID-19 pandemic. To study the mitigation capabilities, we conduct a multi-layer analysis (network, process, and control levels) using Bayesian network, mathematical optimisation, and discrete event simulation methodologies. This analysis revealed an associative relationship between ripple effect mitigation capabilities and network design characteristics of upstream supply chain entities. Using stochastic optimisation and Lagrangian relaxation, we then find ideal candidates for regional distribution centres at the downstream level. We then integrate these downstream locations with other supply chain entities for building the network optimisation and simulation model to analyse overall performance of the system. We demonstrate utility of our proposed methodology using a case study involving distribution of N95 masks to ‘Jan Aushadhi’ (peoples’ medicines) stores in India during COVID-19 pandemic. We find that supply chain reconfiguration improves service level to 95.7% and reduces order backlogs by 10.7%. We also find that regional distribution centres and backup supply sources provide overall flexibility and improve occupational health and safety. We further investigate alternate mitigation capabilities through fortification of suppliers’ workforce by vaccination. We offer recommendations for policymakers and managers and implications for academic research. [ABSTRACT FROM AUTHOR]

The article reports that history of face masks has become a very popular topic in light of the COVID-19 pandemic, especially for news reporters and public health experts. Topics include why do Asians wear masks despite the lack of scientific evidence which sociologist Mitsutoshi Horii; and Asia's societal and cultural paradigm supports mask-usage hygienic practices without any empirical evidence.

COVID-19 has had a devastating impact on people's lives since its initial outbreak and global spread in 2020. While the U.S. government and public health officials have recommended best practices such as social distancing, wearing a mask, and avoiding large public gatherings, these orders have been met with varying levels of acceptance from the public. Given the disparate compliance, this study builds on Social Cognitive Theory (SCT) to explore individual differences and personal motivation factors in order to better understand what may influence one's likelihood to adhere to COVID-19 protective measures. A U.S. national survey (N = 2,049) was conducted April–May 2020, roughly one month after stay-at-home orders were issued in some states. Participants were asked to report their likelihood of taking individual and community protective measures. Multivariate hierarchical linear regressions were run to analyze the extent to which participants' concerns about COVID-19's impact, individual and collective self-efficacy, coping behaviors, and personality traits influenced the dependent variables. Findings showed that COVID-19-related health concerns, collective efficacy, and proactive coping strategies were positively related to participants' likelihood of taking protective measures. Those with greater concerns about their general well-being and the economy, adverse coping strategies like denial and joking, as well as sensation-seeking personalities, were less likely to take protective measures. The discussion considers how individual differences fit into broader global efforts to stem COVID-19. Practical implications for public health messaging are that communication may focus on facilitating efficacy in order to boost compliance with protective measures. [ABSTRACT FROM AUTHOR]

This study adopts a theory of reasoned action approach to understand consumers' mask wearing when shopping in the context of the COVID-19 pandemic. We investigated mask wearing while shopping as a prosocial consumption behaviour whereby self-oriented benefits and others-oriented benefits are added as proposed drivers of attitudes and perceived social norms. Empirical evidence from a survey in France and Germany confirms a strong effect of social norms on mask-wearing intentions. Moreover, altruistic benefits predict mask-wearing intentions, with attitude and subjective norms as mediators. In contrast, self-expression benefits of mask wearing only influence perceived social norms and not attitudes; this effect differs between the countries. Our findings guide scholars, policy makers and practitioners to steer consumers' mask wearing as a prosocial behaviour. [ABSTRACT FROM AUTHOR]

Wastewater generated as a result of extracting oil and gas from subterranean reservoirs is known as produced water. There are suspended solids, dissolved solids, organic and inorganic compounds, emulsified oil, and other substances. Untreated produced water may have a harmful impact on the ecology. In this study, waste from Coronavirus Face Masks was used as an adsorbent dosage for produced water adsorption discharged from the south Oil Company – Basra. In each trial, a 250 ml beaker held 100 ml of generated water, temperature (25, 35 and 50)°C, adsorbent dosage (2, 5 and 10)g, Investigations were also conducted on contact duration (30, 60, and 90) minutes, pH at (2, 4, 6, and 8), and mixer rotational speed (200 rpm). The ideal parameters for removing 97 percent of the oil were determined to be 25°C, pH 8, 5 g of adsorbent, and 90 min of contact time using a generic model built from the experimental data. Other oil removal equilibrium isotherm models did not adequately account for the experimental results, as did the Langmuir equation. The most common type of adsorption used in kinetics research is pseudo-first-order adsorption. [ABSTRACT FROM AUTHOR]

Transmission of an airborne disease can occur when an individual exhales respiratory particles that contain infectious pathogens. Surgical face masks are often used to reduce the amount of respiratory aerosol emitted into the environment by an individual while also lowering the concentration of particles the individual inhales. Respiratory aerosol generation is activity-dependent with high person-to-person variability. Moreover, mask fit differs among people. Here, we measure the efficacy of surgical masks (EN14683 Type IIR) in reducing both aerosol (0.3 − 20 µm diameter) and droplet (20 − 1000 µm diameter) emission during breathing, speaking and five speech and language therapy tasks performed by a human cohort. When participants wore a surgical face mask, measured particle number concentrations at the front of the mask were always lower than that for breathing without mitigation in place. For breathing and speaking, the through-mask filtration efficiencies were 80% and 87%, respectively, while for voice therapy tasks the through-mask filtration efficiencies ranged from 89% ("Hey!") to 95% (/a::/). Size-dependent through-mask filtration efficiencies were high (80 – 95%) for particles 0.5 − 2 µm diameter, with masks filtering a greater fraction of larger particle sizes. For particle sizes >4 µm diameter, filtration efficiencies of surgical face masks for all tested respiratory tasks were ∼100%. Surgical face masks significantly reduced the number of particles emitted from all respiratory activities. These results have implications for developing effective mitigations for disease transmission through inhalation. [ABSTRACT FROM AUTHOR]

Frequent donning and doffing of filtering facepiece respirators (FFRs) can reduce their effectiveness due to the residual deformation of their elastic head straps. This study investigates the loss of elasticity of head straps during repeated use. Five elastomeric tapes were tested as FFR head straps, and their tensile strength was measured using a DU-100 dynamometer after repeated donning and doffing cycles. After eight consecutive uses, the protection factor drops significantly, requiring strap length adjustments to guarantee the specified level of user protection. The maximum tensile force of the elastomeric head straps causes residual elongation, which remains consistent after eight cycles. The study also establishes how strap elongation depends on the force and number of donning and doffing cycles. This knowledge is vital for designing better FFRs. Additionally, the research explores alternative materials for FFR construction to address strap elongation and its effects on performance and comfort. [ABSTRACT FROM AUTHOR]

Purpose: COVID-19 continues to infect and affect college-aged youth. We lack information about how students experienced the pandemic day-to-day and what they need for recovery, from their own perspectives. This study employed peer ethnography to explore student's insights for current and future prevention and care. Methods: A team of eight students were trained as peer ethnographers to observe and record conversations with their peers in 15-minute increments during the COVID-19 pandemic. Transcripts of 200 conversations were collated and analysed via theme analysis to identify patterns. Results: Student conversations revealed dichotomous perspectives about COVID-19. Some students prioritized safety, captured via three themes--caution, rethinking routines, and protecting others. Other students struggled to follow prevention guidelines and took risks, also captured by three themes--parties, denial, and misinformation. A third category of themes captured the results of this dichotomy--tense campus relationships and a health leadership vacuum. Conclusions: Our findings identify specific locations for intervention (e.g., off campus parties) and needed community collaborations (e.g., bars and universities) for COVID-19 and future pandemics. Our findings suggest that overarching approaches, like harm reduction or affirmation (versus shame), are helpful intervention frameworks. Findings also celebrate the value of peer-ethnography, to learn about pandemics and solutions from the ground up. [ABSTRACT FROM AUTHOR]

Public and private decision-making on health problems relies on scientific evidence. However, scientific knowledge includes uncertainty, as does knowledge about COVID-19. In an experimental study, we tested how the trustworthiness (on the three dimensions expertise, integrity, and benevolence) of a source of information (either a scientist or a politician), was affected when messages were either two-sided (including arguments pro and contra the effectiveness of mask-wearing) or one-sided (only pro arguments). Results showed that scientists were ascribed more expertise and integrity compared to politicians, and both sources were ascribed more expertise when they gave two-sided (instead of one-sided) information. Moreover, trustworthiness ratings on all three dimensions were affected by participants' prior topic attitudes and epistemic certainty beliefs. These findings underline that when a source provides two-sided information, this may increase people's willingness to trust that source. To use this strategy most effectively in health communication, more research should be done on how many and what types of counterarguments to include. [ABSTRACT FROM AUTHOR]

This study investigates the aerosol transmission in queuing and dining scenarios in canteens and explores the effectiveness of control measures. An improved Wells-Riley equation is adopted to calculate the infection risk. The dilution of exhaled aerosols is difficult in the crowded queuing scenario, where the replacement of queuing positions increases the cross-infection risk. The highest infection risk is 1.16% and 1.08% for the linear-queue and cross-queue condition, respectively. Shortening the queuing duration, increasing the separation distance, and wearing masks can considerably reduce the infection risk. In the dining scenario, the effect of increasing ACH is limited on reducing the local concentration. An exhaust vent installed close to the top of the partition can effectively remove the local high-concentration aerosols. Intermittent occupation of a seat can considerably reduce the transmission risk between the consecutive dinners taking that seat. These findings should contribute to improved control of infectious transmission in canteens. [ABSTRACT FROM AUTHOR]

Black women experience psychological distress yet are less likely to receive mental health services. Although the barriers to service use are documented, fewer efforts have centered on interventions to mitigate these barriers. This article presents Masks Off, a community-based psychoeducational group intervention that may increase mental health service utilization and wellness among Black women. Pilot data extracted from a sample of Black women (n = 37; M = 43.71 years) suggested the intervention was well received and supported women's development of adaptive thoughts related to strong Black womanhood and wellness. Implications related to group work with Black women are discussed. [ABSTRACT FROM AUTHOR]

Objective: To explore the risk perceptions and COVID-19 prevention practices of dormitory residents in Indonesia. Participants: Nineteen dormitory residents, 3 staff and 1 dormitory manager were recruited from the Saint Theresa Avila student dormitory. Methods: This qualitative study used individual interviews and framework analysis. Results: Generally, the study confirms that there is a gap between risk perception and COVID-19 prevention practices among dormitory residents. There are barriers in accessing hand washing facilities and in complying with COVID-19 prevention protocols including not wearing masks, not following quarantine procedures and visiting friends' rooms. Conclusion: Dormitory managers and staff should repeatedly remind residents to wear masks and maintain safe distance through sending short messages on dormitory social media groups. In addition to psychological assistance and basic supplies during self-quarantine, providing sanitizer and installing posters detailing the hand-washing steps are essential at each hand-washing facility in the dormitory. [ABSTRACT FROM AUTHOR]

India witnessed a large surge in COVID-19 cases in April 2021, a second wave of nearly 350,000 daily new infections across the country. As of December 2021, cases have reduced drastically, in part due to greater vaccine coverage across the country. This study reports results on vaccine hesitancy, attitudes, and behaviors from an online survey conducted between February and March 2021 in nine Indian cities (N = 518). We find that vaccine hesitancy negatively predicts willingness to take the vaccine, and beliefs about vaccine effectiveness supersede hesitancy in explaining vaccine uptake. Furthermore, we find that mask-wearing and handwashing beliefs, information sources related to COVID-19, and past COVID-19 infection and testing status are all strongly associated with the hypothetical choice of vaccine. We discuss these findings in the context of behavioral theories as well as outline implications for vaccine-related health communication in India. [ABSTRACT FROM AUTHOR]

Since early 2020, COVID-19 has spread throughout the United States (US), killing more than 700,000. Mask-wearing, social-distancing, and hand hygiene can curb the spread of COVID-19 and other infectious diseases. However, the adherence to COVID-19 safety measures varies considerably among the US public, likely due to disparate perceptions of COVID-19's risk. The current study examines risk perceptions for COVID-19 (RP-C) in a nationally representative sample of US residents (N = 512), as well as their political preferences, news media consumption, COVID-19 safety attitudes (SA-C) and reported COVID-19 safety behaviors (SB-C; e.g., mask-wearing and social-distancing). Using structural equation modeling, we tested a comprehensive measure for RP-C with a single latent factor, finding good model fit. We found that higher RP-C was associated with being more liberal, consuming more traditional news media, having attitudes that supported compliance with COVID-19 safety measures, and having greater reported compliance with COVID-19 safety measures. In addition, factor loadings for RP-C items indicate that people's RP-C was more strongly determined by personal and family, rather than collective or societal risk, which suggests risk communication may be improved by focusing on personal and family risk. Public health efforts to combat COVID-19 are only as good as compliance allows, and RP-C's strong relationship with SB-C indicates a potential means for risk communicators to increase compliance with COVID-19 safety measures. This finding will remain important as new COVID-19 variants, such as the Delta variant, emerge. [ABSTRACT FROM AUTHOR]

The coronavirus disease 2019 (COVID-19) has caused a worldwide outbreak. The severe acute respiratory syndrome coronavirus 2 virus can be transmitted human-to-human through droplets and close contact where personal protective equipment (PPE) is imperative to protect the individuals. The advancement of nanotechnology with significant nanosized properties can confer a higher form of protection. Incorporation of nanotechnology into facemasks can exhibit antiviral properties. Nanocoating on surfaces can achieve self-disinfecting purposes and be applied in highly populated places. Moreover, nano-based hand sanitizers can confer better sterilizing efficacies with low skin irritation as compared to alcohol-based hand sanitizers. The present review discusses the incorporation of nanotechnology into nano-based materials and coatings in facemasks, self-surface disinfectants and hand sanitizers, in the hope to contribute to the current understanding of PPE to combat COVID-19. [ABSTRACT FROM AUTHOR]

Loose-fitting powered air-purifying respirators (PAPRs) are used in healthcare settings, although barriers to routine, everyday usage remain, including usability concerns and potential interference with work activities. Loose-fitting PAPRs are approved by the National Institute for Occupational Safety and Health (NIOSH) and must meet minimum performance requirements, including a minimum airflow requirement of 170 L/min. One course of action to address usability concerns is to allow for the use of PAPRs designed with reduced airflow rates. The primary objective of this study was to assess the effect of PAPR flow rate and user work rate on PAPR performance, using a manikin-based assessment method. PAPR performance was quantified using the "Manikin Fit Factor" (mFF), a ratio of the challenge aerosol concentration to the in-facepiece concentration. Flow rates from 50–215 L/min and low, moderate, and high work rates were tested. Two models of NIOSH Approved loose-fitting facepiece PAPRs were tested, both having an Occupational Safety and Health Administration Assigned Protection Factor (APF) or expected level of protection, of 25. A two-way analysis of variance with an effect size model was run for each PAPR model to analyze the effects of work rate and flow rate on PAPR performance. Flow rate and work rate were found to be significant variables impacting PAPR performance. At low and moderate work rates and flow rates below the NIOSH minimum of 170 L/min, mFF was greater than or equal to 250, which is 10 times the OSHA APF of 25 for loose-fitting facepiece PAPRs. At high work rates and flow rates below 170 L/min, mFF was not greater than or equal to 250. These results suggest that some loose-fitting facepiece PAPRs designed with a flow rate lower than the current NIOSH requirement of 170 L/min may provide respirator users with expected protection at low and moderate work rates. However, when used at high work rates, some loose-fitting facepiece PAPRs designed with lower flow rates may not provide the expected level of protection. [ABSTRACT FROM AUTHOR]

As the percentage of right-handers increases in a state, the tightness of that state's culture, as measured, also increases. The relations between handedness, tightness, and various COVID measures (cases per 100,000, vaccination rates, hospitalization rates, death rates, and mask wearing adherence) were examined. Left-handedness rates and tightness both marginally predicted COVID cases and significantly predicted vaccination rates (more right-handers and more tightness associated with higher COVID rates and lower vaccination rates), only left-handedness rates predicted mask wearing adherence (more left-handers associated with increased adherence), only tightness predicted death rates (more tightness associated with higher death rates), and neither handedness or tightness predicted hospitalizations. Results are discussed in terms of the connection between consistent right-handedness and decreased cognitive flexibility and its implication for sociopolitical outcomes, and implications for the framing of public health messaging are presented. [ABSTRACT FROM AUTHOR]

Efforts by universities to reduce the spread of COVID-19 include health campaigns intended to encourage students to wear masks. While well-intended, these efforts may produce counter-persuasion (e.g., decrease masking) if they are seen as threatening individuals' freedom to choose. In a rolling cross-sectional study of one university campaign (n = 681), we found that the presence of the campaign did instigate a form of resistance known as reactance and that reactance was negatively associated with masking behavior. Masking was also diminished by the frequency with which respondents observed others not wearing a mask (anti-masking descriptive norm) and the frequency with which respondents observed others expressing disdain for masking (anti-masking injunctive norm). Most of these findings were magnified among students who identified as politically conservative. There was no evidence that the frequency of seeing others speak in favor of masks (pro-masking injunctive norm) produced an increase in masking. The results provide valuable theoretical insights into the causes of reactance and empirical evidence of the risks associated with student-oriented COVID safety campaigns. [ABSTRACT FROM AUTHOR]

During the Covid-19 pandemic, face masks became widely used and sometimes mandatory anti-infection devices across the world. While anti-mask protests emerged in several Western countries, nearly universal mask-wearing is commonly seen in Asian countries. Journalistic and popular accounts suggest that an Asian 'mask culture' explains the acceptance of mask-wearing and associates mask culture with political authoritarianism in Asian countries. Based on in-depth interviews conducted with residents of Singapore, an Asian city-state that implemented a mask mandate in 2020, we uncover a wide diversity of beliefs, motivations, and practices of mask-wearing that challenges the existence of a homogeneous 'mask culture'. Drawing on a recent theoretical movement known as the anthropology of ethics, we draw attention to individual judgments and engagements with cultural norms and obligations in order to characterise how it became 'desired and desirable' for a diverse population of Singapore residents to wear masks. [ABSTRACT FROM AUTHOR]

This study investigates the factors that might have affected the implementation of the mask-wearing measure in Greek society from March 2020 to November 2021. To do so, this study utilizes a critical review of dominant characteristics of modern Greek society followed by a systematic review of the most recent literature on mask-wearing attitudes. The data in this study is derived from official Greek governmental announcements regarding the mask-wearing measure during the pandemic and the depiction of attitudes towards mask-wearing through Greek digital media, including digital newspapers, informative magazines and websites, and digital news sites. The article argues that the main preventive factors relate to distrust towards authority, including specific identified barriers according to relevant literature. More importantly, this study reinforces the significance of the adequate appreciation of the historical, cultural and social context within which political measures are implemented regardless of their global scale and universal necessity. [ABSTRACT FROM AUTHOR]

The COVID-19 pandemic has become a partisan issue rather than an independent public health issue in the US. This study examined the behavioural consequences of motivated reasoning and framing by investigating the impacts of COVID-19 news exposure and news frames, as apparent through a Latent Dirichlet topic modelling analysis of local news coverage, on state-level preventive behaviours as understood through a nationally representative survey. Findings suggested that the media effects on various preventive behaviours differed. The overall exposure rate to all COVID-19 news articles increased mask-wearing but did not significantly impact other preventive behaviours. Four news frames significantly increased avoiding contact or avoiding public or crowded places. However, news articles discussing anxiety and stay at home order triggered resistance and countereffects and led to risky behaviours. 'Solid Republican' state residents were less likely to avoid contact, avoid public or crowded places, and wear masks. However, partisan leanings did not interfere with the impact of differing local COVID-19 news frames on reported preventive behaviours. Plus, statements regarding pre-existing trust in Trump did not correlate with reported preventive behaviour. Attention to effect sizes revealed that news exposure and news frames could have a bigger impact on health behaviours than motivated reasoning. [ABSTRACT FROM AUTHOR]

SARS-CoV-2 spreads by infectious aerosols and droplets from the respiratory tract. Masks and respirators can reduce the transmission of infectious respiratory diseases by collecting these aerosols at the source. The ability of source control devices to block aerosols can be tested by expelling an aerosol through a headform using constant airflows, which are simpler, or cyclic airflows, which are more realistic but require more complex methods. Experiments with respirators found that using cyclic vs. constant flows affected the amount of aerosol inhaled, but similar comparisons have not been made for source control devices with exhaled aerosols. We measured the collection efficiencies for exhaled aerosols for two cloth masks, two medical masks with and without an elastic mask brace, a neck gaiter, and an N95 filtering facepiece respirator using 15 L/min and 85 L/min constant and cyclic flows and a headform with pliable skin. The collection efficiencies for the 15 L/min cyclic flow, 15 L/min constant flow, and 85 L/min constant flow were not significantly different in most cases. The apparent collection efficiencies for the 85 L/min cyclic flow were artificially increased by rebreathing and refiltration of the aerosol from the collection chamber. The collection efficiencies correlated well with the fit factors (ρ > 0.95) but not the filtration efficiencies (ρ < 0.54). Our results suggest that the aerosol collection efficiency measurements of source control devices are comparable when testing the devices using either constant or cyclic airflows and that the potential for aerosol rebreathing must be considered when conducting experiments. [ABSTRACT FROM AUTHOR]

In recent decades, socioscientific issues (SSI) have been emerging from the interrelationship between science, technology, and society. For example, due to the COVID-19 pandemic, related decisions, like whether we need to ask people to use facemasks, is an SSI question being discussed internationally with no right or wrong answer. Controversial issues like SSI and the ability to make informed decisions need to be taught in school, which raises the question of whether teachers themselves are equipped with the skills required to make decisions on SSI. This study aimed to explore whether primary science pre-service teachers could consider multiple subject areas while making decisions on SSI in the context of abortion. Forty-two pre-service primary science teachers (third-year university students) in a genetics and biotechnology course participated in the study. The participants were asked to make decisions about abortion in three genetics-related scenarios and to explain their reasons in written reports. The SEE-SEP (science, environment, ethics/morality, sociology/culture, economy, and policy) model was adopted to explore the reasons behind the pre-service teachers' decisions. The results showed that their decisions were influenced mainly by science and ethics/morality subject areas. The results further revealed that the participants who supported abortion based their decisions on both scientific evidence and their emotional responses. On the other hand, the pre-service teachers who were against abortion based their decisions on scientific evidence and the aspect of uncertainty. Accordingly, our study recognises the importance of including both science and ethics/morality discussions in SSI-based teaching. The implications for SSI-based teaching and learning are discussed. [ABSTRACT FROM AUTHOR]

Various conspiracy theories have accompanied COVID-19 since its initial outbreak. Based on a nationwide survey in China, this study probes the health consequences of beliefs in different COVID-19 conspiracy theories in China. The research found that believing the coronavirus has a foreign natural origin was associated with increased rather than decreased intention to adopt protective behaviors. Nonetheless, believing that the source of the pandemic was a Chinese lab or that it is a foreign biological weapon was related to reduced intentions to protect one's health. In addition, measured as national pride and satisfaction with China's pandemic control effort, people's level of nationalism was strongly associated with their intention to adopt protective behaviors, which moderates the health consequences of believing in false conspiracy theories. Scientific literacy was also associated with an increased likelihood of adopting preventive measures. Despite revealing the diversified health consequences of conspiracy beliefs, this study demonstrates the importance of examining collectivist sociopolitical constructs in health communication. [ABSTRACT FROM AUTHOR]

Discarded disposable medical masks generated due to the COVID−19 epidemic are overwhelming the current medical waste disposal facilities. Thermal disposal masks in domestic waste incinerator can both utilize the heat energy released by their combustion and dispose of the headache-inducing masks in a harmless manner. The masks are divided into 6 parts: white inside (WI), filter (FI), blue outside (BO), bonding of 3 parts (BP), ear strap (ES) and nose wire (NW). The highest burnout temperature (Tb) of each part of the mask was only 481.2°C and had a high HHV of 40.47 MJ/kg, which has a high energy potential as an energy source. The NOx, SO2, and HCl emission characteristics of each part of the masks were evaluated in a fixed-bed reactor. BP, BO, and ES contradict SO2 and HCl emission limits in China. The SO2 and HCl emission peaks of the masks with the addition of 10 wt% Ca(OH)2 did not exceed 60 mg/m3, which made the combustion emissions of the masks comply with GB 18,485–2014. Considering subsidies for disposal of masks and power generation, blending masks with a 1%−5% ratio enhances the subsidy revenue of waste incineration power plants by 12.63%−63.13%. [ABSTRACT FROM AUTHOR]