23 results on '"Alvi Y"'
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2. Phytotoxic and Cytotoxic Effects, Antioxidant Potentials, and Phytochemical Constituents of Stevia rebaudiana Leaves
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Einstivina Nuryandani, Dedy Kurnianto, Jasmadi Jasmadi, Ardiba Rakhmi Sefrienda, Erliana Novitasari, Erni Apriyati, Yeyen Prestyaning Wanita, Siti Dewi Indrasari, Rofiq Sunaryanto, Donowati Tjokrokusumo, Alvi Yani, Indyaswan Tegar Suryaningtyas, and Yusuf Andriana
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Medicine ,Science - Abstract
Stevia (Stevia rebaudiana), recognized for its low-calorie, sugar-free attributes, and various health benefits, has potential applications beyond human consumption, particularly in agriculture. This study explored the potential uses of Stevia in both agricultural and healthcare contexts by examining its plant-inhibitory, cytotoxic, and antioxidant effects. The methanolic extract of Stevia leaves was fractionated into hexane, ethyl acetate, chloroform, and water fractions. These fractions were then subjected to the bioassay analyses above and underwent identification of their chemical constituents. The results indicated that the ethyl acetate fraction demonstrated significant inhibitory effects on weed germination and growth of Beggars tick (Bidens frondosa) (100% inhibition at 1000 ppm of dose). This fraction also exhibited the highest antioxidant activity, total phenolic, and total flavonoid contents (IC50 DPPH = 18.67 μg/mL, 103.50 mg GAE/g fraction, and 410.16 mg QE/g fraction, respectively). In contrast, the chloroform fraction showed the highest cytotoxic effect (LC50 = 700.01 ppm) in the brine shrimp (Artemia salina) mortality evaluation. Pearson’s correlation analysis revealed a positive correlation among plant inhibitory effects, antioxidant potentials, and phenolic/flavonoid contents of Stevia. FTIR spectra confirmed the presence of phenols and nonpolar components in the ethyl acetate and chloroform fractions. In addition, GC-MS analysis successfully identified Stevia’s key constituents, including tetracontane, hexadecane, hexadecanoic acid, methyl ester in the ethyl acetate fraction, and spiro [4.5] decan-7-one and 6-hydroxy-4,4,7a-trimethyl-5,6,7,7a-tetrahydrobenzofuran-2(4H)-one in the chloroform fraction. This study underscores the potential of S. rebaudiana as a source of natural antioxidants and herbicides, offering valuable insights into its diverse applications in agriculture.
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- 2024
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3. Steaming Maintains Fatty Acids, Antioxidants, and Proximate Content in Snack Bar Products from Cocoa Beans
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Kasma Iswari, null Atman, Leni Marlina, null Riska, Sri Satya Antarlina, Ratna Wylis Arief, null Waryat, Rosniyati Suwarda, Noveria Sjafrina, Alvi Yani, null Sunarmani, Gabriel Herald Joseph, Meivie Lintang, Payung Layuk, and Abdullah Bin Arif
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Technology ,Medicine ,Science - Abstract
Chocolate products on the market are generally in the form of chocolate bars as snacks made from cocoa powder. Fat and powder are separated first through a pressing process to obtain the cocoa powder. Cocoa powder loses most of its fat content during processing. Therefore, the study aimed to determine the effect of steaming time on the cocoa bean content of fatty acids, free fatty acids, proximate levels, and antioxidant activity of snack bar products made from steamed cocoa beans. Seven steaming time intervals for cocoa beans were studied. The results showed that a longer steaming time affects the fatty acids, saturated fatty acids, antioxidants, and proximate in cocoa beans. Steaming time treatment at 45 minutes increased oleic acid, palmitic acid, and antioxidant activity. In addition, reducing free fatty acids represents a quality improvement that meets international Codex Alimentarius standards, offering a competitive advantage in the market. The food industry can adopt this steaming technique to develop snack bars and new products that are healthier and more sustainable by using steaming as an effective processing method in maintaining and increasing the nutritional value of products.
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- 2024
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4. IJCM_107A: A study on healthcare seeking behaviour among the geriatric population residing in southeast Delhi: A community based cross sectional study
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Sultana Eram, Roy Sushovan, Alvi Yasir, and Gautam Richa
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geriatric health ,healthcare seeking behavior ,morbidity ,hypertension ,diabetes ,Public aspects of medicine ,RA1-1270 - Abstract
Background: Health-seeking behaviour is defined as ‘any activity undertaken by individuals who perceive themselves to have a health problem or to be ill for the purpose of finding an appropriate remedy. The severity of the disease among elderly is influenced by one important factor which is health seeking behaviour. To regain their lost health status the elderly must seek the treatment. The way people conceptualize the cause of their health problem and their perception of symptoms plays an important role in seeking healthcare. Health seeking behaviour is influenced by few factors like illiteracy, misconception, income, family composition, social isolation and dependency. Objective: To assess the healthcare seeking behaviour among the geriatric population residing in the field practise area of a Medical College in South East Delhi. Methodology: Community-based cross-sectional study conducted in South East Delhi. • The sample size was calculated as 350 considering a relative error of 3% at 95% level of significance and 10% non-response rate. Stratified random sampling with probability proportional to size was applied to the population registered at UHTC & RHTC area of a medical college in southeast Delhi. Households were selected by systematic random sampling. Persons aged > 60 years from the households were selected for the study. A self-designed, pre-tested, validated, structured questionnaire was used to collect the data. Results In our study it was found that the majority of the participants take treatment when they fall sick ie 99.5%. Of those who take treatment 54% go forconsultation whereas 48% take over the counter medication and 33% do home remedies. Out of the 54% who consult, 78.7% visit Private health facility and 21.3% visit Public health facility. Out of the 78.7% who visit private health facility 65.9% visit Non registered medical practitioner and 7.1% don’t even know whether their doctor is registered or not. Majority of the participants ie 86% preferred health facility within 1kms of their house & it was also a major reason for choosing a health facility for consultation. 98% of the participants visit only in case of illness. 52% were accompanied by their children or daughter in law and 26% visited alone. Conclusion: The participants favoured more private than public healthcare institutions. Nearby medical facilities were favoured, and non-registered medical professionals comprised the majority of them. Almost all senior people received therapy of some kind rather than dismissing it as an issue unique to ageing.
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- 2024
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5. IJCM_92A: Pregnancy outcomes associated with antenatal care service utilization & barriers and enablers affecting the utilization of antenatal care services in South-East Delhi: A community-based cross-sectional study
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Bano Aysha, Islam Farzana, and Alvi Yasir
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antenatal care services ,Public aspects of medicine ,RA1-1270 - Abstract
Background: Antenatal care provides preventive health care, through which women can learn from skilled health personnel. Women who don’t consume Iron Folic Acid Supplements as prescribed would experience iron and folic acid (IFA) deficiency anemia. Iron deficiency has negative effects on mothers and newborns while folic acid deficiency in pregnancy causes pre-eclampsia, preterm delivery, neural tube defects, fetal malformation, type 2 diabetes, and obesity in the newborn. Comprehensive antenatal care is early registration of pregnancy (within 12 weeks), at least four ANC visits at a health facility, two doses of tetanus toxoid, and at least 100 days of IFAS consumption. Objectives: 1-To assess pregnancy outcomes associated with antenatal care service utilization in participants aged 18-49 years residing in the field practice areas of a Medical College in South-East Delhi. 2-To determine the barriers and enablers affecting the utilization of antenatal care services in the given population. Methodology: It is a community-based cross-sectional study conducted in South-East Delhi. The sample size was calculated as 300 considering a 5% absolute error for a 95% confidence interval and 10% non-response rate. Out of 300, the current data of 200 participants will be depicted here. Stratified systematic random sampling with the Probability Proportional to Size technique was applied to the population registered at RHTC & UHTC. Households were selected by systematic random sampling. Pregnant women aged between 18-49 years were selected from the household. A self-designed, pre-tested, validated structured questionnaire was used. Results: Out of the total number of participants, 66.0% had knowledge regarding early registration of pregnancy. 80.0 % had permission to attend a health facility, 70.5 % had an accompanying person, 62.5 % of participants had been residing more than 6 km away from the health facility. 58.0 % of participants could meet the expenses of health care services. Out of all newborns, 90.0 % had normal birth weights, 10% had low birth weights, 81.0% participants had NVDs, and 19% were caesarean sections. Conclusion: Enablers are knowledge regarding early registration, presence of accompanying person. Permission for health visits, expenses for health care services & distance to health facility were barriers.
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- 2024
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6. Fake news during the pandemic times: A Systematic Literature Review using PRISMA
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Awan Tahir Mumtaz, Aziz Mahroz, Sharif Aruba, Ch Tehreem Raza, Jasam Taha, and Alvi Yusra
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covid-19 ,fake news ,misinformation ,social media ,rumors ,Bibliography. Library science. Information resources - Abstract
The purpose of this systematic literature review is to review the major studies about misinformation and fake news during COVID-19 on social media. A total of 144 articles studies were retrieved from ScienceDirect, Scopus, and Web of Science databases and 20 relevant articles were selected using the PRISMA technique. It was found that altruism, instant news sharing, self-promotion, and socialization are predictors of fake news sharing. Furthermore, the human mind plays a significant role in spreading misinformation while the role of critical thinking of individuals is very much important in controlling the flow of misinformation.
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- 2022
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7. A study of 'rational use of investigations' in a tertiary hospital
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Alvi, Y., Syed Ziaur Rahman, and Zaheer, M. S.
8. An interventional study to assess the impact of behavior modification therapy on motivation level for tobacco cessation among adult tobacco users in a resettlement colony of South Delhi.
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Gautam R, Alvi Y, Islam F, Kumar N, Pathak R, Agarwalla R, Panda M, Gupta E, Parashar M, and Dayal RP
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Background: Tobacco use remains a significant global health challenge, contributing to 8 million annual deaths and potentially reaching 1 billion deaths in the 21
st century. Despite taking efforts like India's National Tobacco Control Program, the country faces a persistent 39% tobacco use prevalence, particularly in low-income communities like those from Madanpur Khadar, Delhi. This study explores the effectiveness of behavior modification therapy in addressing this challenge., Materials and Methods: In a community-based trial, 400 adult tobacco users from Madanpur Khadar were enrolled and randomization and allocation concealment were done (CTRI no.: CTRI/2021/06/034298). Participants were randomly assigned to intervention and control groups during the study period of 18 months. Data on sociodemographic characteristics, smoking behaviors, and motivation levels were collected. The intervention included behavior modification therapy, while the control group received brief advice. Motivation levels were assessed using the contemplation ladder, and carbon monoxide levels were measured with piCO + Smokerlyzer. The study adhered to ethical considerations and obtained approval from Jamia Hamdard's Institutional Ethical Committee., Results: Sociodemographic characteristics revealed a predominantly male (88%) population, aged above 30 years (68.5%), with lower middle class representation (51%). The intervention group exhibited a 7% smoking cessation rate, which is significantly higher than the control group (1%). piCO+ Smokerlyzer confirmed a 41.7% reduction in carbon monoxide levels among participants in the intervention group. High motivation levels correlated with successful quitting, with a 6.5 times higher odds ratio for highly motivated individuals compared to low or moderately motivated ones., Conclusions: The study highlights the cost-effective impact of behavior modification therapy in promoting tobacco cessation, particularly in resource-constrained settings. The significant association between motivation levels and quitting underscores the importance of tailored interventions in public health initiatives aimed at reducing tobacco use., Competing Interests: There are no conflicts of interest., (Copyright: © 2024 Journal of Education and Health Promotion.)- Published
- 2024
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9. Situation Analysis of Early Implementation of Programmatic Management of Tuberculosis Preventive Treatment among Household Contacts of Pulmonary TB Patients in Delhi, India.
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Alvi Y, Philip S, Anand T, Chinnakali P, Islam F, Singla N, Thekkur P, Khanna A, and Vashishat BK
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Tuberculosis Preventive Treatment (TPT) is a powerful tool for preventing the TB infection from developing into active TB disease, and has recently been expanded to all household contacts of TB cases in India. This study employs a mixed-methods approach to conduct a situational analysis of the initial phase of TPT implementation among household contacts of pulmonary TB patients in three districts of Delhi, India. It was completed using a checklist based assessments, care cascade data, and qualitative analysis. Our observations indicated that organizational structure and planning were established, but implementation of TPT was suboptimal with issues in drug availability and procurement, budget, human resources, and training. Awareness and motivation, and shorter regimen, telephonic assessment, and collaboration with NGOs emerged as enablers. Apprehension about taking TPT, erratic drug supply, long duration of treatment, side effects, overburden, large population, INH resistance, data entry issues, and private provider reluctance emerged as barriers. The study revealed potential solutions for optimizing TPT implementation. It is evident that, while progress has been made in TPT implementation, there is room for improvement and refinement across various domains.
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- 2024
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10. SARS-CoV-2 infection and seropositivity among household contacts of laboratory confirmed cases of COVID-19 in residents of Delhi, India.
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Das AK, Islam F, Alvi Y, Dudeja M, Ahmad M, Rahman A, Roy S, Aamir, and Ahmed M
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The transmission of respiratory pathogens, including SARS-CoV-2, is often facilitated through household contact. To better understand the transmission rate of COVID-19 among households and factors that affect viral clearance and seroconversion, a case-ascertained community-based prospective study was conducted between December 2020 and June 2021 on the urban population of the national capital region of India. The study collected nasopharyngeal swabs for SARS-CoV-2 RT-PCR on the 1st, 7th, 14th, and 28th day, and blood samples for antibody detection on the 1st, 14th, and 28th day from household contacts (HCs) of laboratory-confirmed COVID-19 cases. The study monitored the demographic data, symptoms, and outcomes of 417 participants, including 99 index cases and 318 contacts, for a period of 28 days. The results of the study showed that SARS-CoV-2 was easily spread within households, with a secondary infection rate of 44.3 %. In fact, almost 70 % of the contacts got infected within 1-2 days of identification of the index case, while 34 % remained asymptomatic. Sero-conversion was found in 35.6 % of the participants while 22.9 % did not produce antibodies after 28 days of infection. The study also revealed that females, spouses, older members, and primary care providers were at higher risk of getting infected in a home setting. However, approximately one-third of individuals in the younger age group managed to avoid infection. The study demonstrated that most infected individuals became RT-PCR negative within two weeks, although viral clearance was delayed in older patients and those with lower cycle threshold values in RT-PCR., Competing Interests: The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper., (© 2024 The Author(s).)
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- 2024
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11. Role of tumor budding and fibrotic cancer stroma in head and neck squamous cell carcinoma.
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Mitha M, Aden D, Zaheer S, Alvi Y, and Chintamani
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- Humans, Squamous Cell Carcinoma of Head and Neck, Prognosis, Cell Differentiation, Carcinoma, Squamous Cell pathology, Head and Neck Neoplasms
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Background: Head and neck squamous cell carcinoma (HNSCC) is an aggressive cancer with an increased frequency of lymph node metastasis at the time of presentation. Tumour budding, characterised by the presence of a single cell or a small grouping of tumour cells (a cluster containing fewer than five malignant cells) at the invasive front and composition of the fibrotic cancer stroma has been demonstrated to have a growing impact on the behaviour of the solid tumour. However exact role played by them is yet to be defined and a standardized scoring system needs to be incorporated., Material and Methods: A total of 45 histopathologically confirmed cases of HNSCC were included in the study. Hematoxylin and Eosin staining (H&E staining), and immunohistochemistry for CK and alpha-SMA were applied to study the tumour budding and fibrotic cancer stroma in all HNSCC cases. The tumour budding was graded as, Grade 1: 0-4 tumour buds, Grade 2: 5-9 buds and Grade 3: ≥ 10 buds and the nature of fibrotic cancer stroma was categorized as mature, intermediate or immature., Results: Among 45 cases analyzed, well differentiated squamous cell carcinoma (WDSCC; Grade 1) accounted for 42.22% (19 cases), whereas moderately differentiated squamous cell carcinoma (MDSCC; Grade 2) and poorly differentiated squamous cell carcinoma (PDSCC; Grade 3) comprised 48.89% (22 cases) and 8.89% (4 cases) respectively. Tumour budding showed instances of 0-4 buds in 33.3% (Grade 1), 5-9 buds in 48.9% (Grade 2), and ≥ 10 buds in 17.8% of cases. Evaluating tumour stroma, Intermediate stroma led at 51.1%, Mature at 37.8%, and 11.1% displayed Immature stroma. Histologically, < 5 buds were seen in 47.4% of Grade 1 cases, while ≥ 10 buds were in 75.0% of Grade 3 cases, proven statistically significant (p = 0.021). However, an association between T&N Stage and tumour budding lacked significance. WDSCC notably had more mature stroma than MDSCC and PDSCC, whereas MDSCC showed higher rates of intermediate and immature stroma (p < 0.001). Comparatively, no significant correlation existed between fibrotic stroma and tumour budding (p = 0.076). Also, fibrotic stroma was compared with tumour budding, however, no significant correlation was found (p = 0.076) CONCLUSION: This study reveals a significant link between tumour budding, cancer stroma, and WHO tumour grade. Thus, evaluating these factors in HNSCC cases can serve as valuable histological prognostic indicators, aiding in treatment planning and prognosis assessment., Competing Interests: Declaration of Competing Interest Th authors declare no conflict of interest., (Copyright © 2024 Elsevier GmbH. All rights reserved.)
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- 2024
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12. Household transmission dynamics of COVID-19 among residents of Delhi, India: a prospective case-ascertained study.
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Islam F, Alvi Y, Ahmad M, Ahmed F, Rahman A, Singh FHD, Das AK, Dudeja M, Gupta E, Agarwalla R, Alam I, and Roy S
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Objective: The aim of this study was to observe the secondary infection rate and transmission dynamics of COVID-19 among household contacts, and their associations with various factors across four dimensions of interaction., Methods: This was a case-ascertained study among unvaccinated household contacts of a laboratory-confirmed COVID-19 case in New Delhi between December 2020 and July 2021. For this study, 99 index cases and their 316 household contacts were interviewed and sampled (blood and oro-nasal swab) on days 1, 7, 14, and 28., Results: The secondary infection rate among unvaccinated household contacts was 44.6% (95% confidence interval (CI) 39.1-50.1). The predictors of secondary infection among individual contact levels were: being female (odds ratio (OR) 2.13), increasing age (OR 1.01), symptoms at baseline (OR 3.39), and symptoms during follow-up (OR 3.18). Among index cases, age of the primary case (OR 1.03) and symptoms during follow-up (OR 6.29) were significantly associated with secondary infection. Among household-level and contact patterns, having more rooms (OR 4.44) and taking care of the index case (OR 2.02) were significantly associated with secondary infection., Conclusion: A high secondary infection rate highlights the need to adopt strict measures and advocate COVID-19-appropriate behaviors. A targeted approach for higher-risk household contacts would efficiently limit infections among susceptible contacts., Competing Interests: The authors have declared that no competing interests exist., (© 2023 The Author(s).)
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- 2023
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13. Assessment of potential risk factors for COVID-19 among health care workers in a health care setting in Delhi, India -a cohort study.
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Dudeja M, Shaikh A, Islam F, Alvi Y, Ahmad M, Kashyap V, Singh V, Rahman A, Panda M, Shree N, Nandy S, and Jain V
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- Humans, SARS-CoV-2, Pandemics prevention & control, Cohort Studies, Seroepidemiologic Studies, Health Personnel, India epidemiology, Risk Factors, Delivery of Health Care, COVID-19 epidemiology
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Introduction: Healthcare workers (HCW) are most vulnerable to contracting COVID-19 infection. Understanding the extent of human-to-human transmission of the COVID-19 infection among HCWs is critical in managing this infection and for policy making. We did this study to estimate new infection by seroconversion among HCWs in recent contact with COVID-19 and predict the risk factors for infection., Methods: A cohort study was conducted at a tertiary care COVID-19 hospital in New Delhi during the first and second waves of the COVID-19 pandemic. All HCWs working in the hospital during the study period who came in recent contact with the patients were our study population. The data was collected by a detailed face-to-face interview, serological assessment for anti- COVID-19 antibodies at baseline and end line, and daily symptoms. Potential risk factors for seroprevalence and seroconversion were analyzed by logistic regression keeping the significance at p<0.05., Results: A total of 192 HCWs were recruited in this study, out of which 119 (62.0%) were seropositive. Almost all were wearing Personal protective equipment (PPE) and following Infection prevention and control (IPC) measures during their recent contact with a COVID-19 patient. Seroconversion was observed among 36.7% of HCWs, while 64.0% had a serial rise in the titer of antibodies during the follow-up period. Seropositivity was negatively associated with being a doctor (odds ratio [OR] 0.35, 95% Confidence Interval [CI] 0.18-0.71), having COVID-19 symptoms (OR 0.21, 95% CI 0.05-0.82), having comorbidities (OR 0.14, 95% CI 0.03-0.67), and received IPC training (OR 0.25, 95% CI 0.07-0.86), while positively associated with partial (OR 3.30, 95% CI 1.26-8.69), as well as complete vaccination for COVID-19 (OR 2.43, 95% CI 1.12-5.27). Seroconversion was positively associated with doctor as a profession (OR 13.04, 95% CI 3.39-50.25) and with partially (OR 4.35, 95% CI 1.07-17.65), as well as fully vaccinated for COVID-19 (OR 6.08, 95% CI 1.73-21.4). No significant association was observed between adherence to any IPC measures and PPE adopted by the HCW during the recent contact with COVID-19 patients and seroconversion., Conclusion: Almost all the HCW practiced IPC measures in these settings. High seropositivity and seroconversion are most likely due to concurrent vaccination against COVID-19 rather than recent exposure to COVID-19 patients. Further studies using anti-N antibodies serology may help us find the reason for the seropositivity and seroconversion among HCWs., Competing Interests: NO authors have competing interests., (Copyright: © 2023 Dudeja et al. This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.)
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- 2023
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14. Effectiveness of BBV152/Covaxin and AZD1222/Covishield vaccines against severe COVID-19 and B.1.617.2/Delta variant in India, 2021: a multi-centric hospital-based case-control study.
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Bhatnagar T, Chaudhuri S, Ponnaiah M, Yadav PD, Sabarinathan R, Sahay RR, Ahmed F, Aswathy S, Bhardwaj P, Bilimale A, Kumar MS, Logaraj M, Narlawar U, Palanivel C, Patel P, Rai SK, Saxena V, Singh A, Thangaraj JW, Agarwal A, Alvi Y, Amoghashree, Ashok P, Babu D, Bahurupi Y, Bhalavi S, Behera P, Biswas PP, Charan J, Chauhan NK, Chetak KB, Dar L, Das A, Deepashree R, Dhar M, Dhodapkar R, Dipu TS, Dudeja M, Dudhmal M, Gadepalli R, Garg MK, Gayathri AV, Goel AD, Gowdappa HB, Guleria R, Gupta MK, Islam F, Jain M, Jain V, Jawahar MLS, Joshi R, Kant S, Kar SS, Kalita D, Khapre M, Khichar S, Kombade SP, Kohli S, Kumar A, Kumar A, Kumar D, Kulirankal KG, Leela KV, Majumdar T, Mishra B, Misra P, Misra S, Mohapatra PR, Murthy MN, Nyayanit DA, Patel M, Pathania M, Patil S, Patro BK, Jalandra R, Rathod P, Shah N, Shete A, Shukla D, Shwethashree M, Sinha S, Sumana MN, Surana A, Trikha A, Tejashree A, Venkateshan M, Vijaykrishnan G, Wadhava S, Wig N, Gupta N, Abraham P, and Murhekar MV
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- COVID-19 Vaccines, Case-Control Studies, ChAdOx1 nCoV-19, Hospitals, Humans, SARS-CoV-2, COVID-19 epidemiology, COVID-19 prevention & control, Influenza Vaccines
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Objectives: India introduced BBV152/Covaxin and AZD1222/Covishield vaccines in January 2021. We estimated the effectiveness of these vaccines against severe COVID-19 among individuals aged ≥45 years., Methods: We did a multi-centric, hospital-based, case-control study between May and July 2021. Cases were severe COVID-19 patients, and controls were COVID-19 negative individuals from 11 hospitals. Vaccine effectiveness (VE) was estimated for complete (2 doses ≥ 14 days) and partial (1 dose ≥ 21 days) vaccination; interval between two vaccine doses and vaccination against the Delta variant. We used the random effects logistic regression model to calculate the adjusted odds ratios (aOR) with a 95% confidence interval (CI) after adjusting for relevant known confounders., Results: We enrolled 1143 cases and 2541 control patients. The VE of complete vaccination was 85% (95% CI: 79-89%) with AZD1222/Covishield and 71% (95% CI: 57-81%) with BBV152/Covaxin. The VE was highest for 6-8 weeks between two doses of AZD1222/Covishield (94%, 95% CI: 86-97%) and BBV152/Covaxin (93%, 95% CI: 34-99%). The VE estimates were similar against the Delta strain and sub-lineages., Conclusion: BBV152/Covaxin and AZD1222/Covishield were effective against severe COVID-19 among the Indian population during the period of dominance of the highly transmissible Delta variant in the second wave of the pandemic. An escalation of two-dose coverage with COVID-19 vaccines is critical to reduce severe COVID-19 and further mitigate the pandemic in the country., (Copyright © 2022 The Author(s). Published by Elsevier Ltd.. All rights reserved.)
- Published
- 2022
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15. Transmission of SARS-CoV-2 in standardised first few X cases and household transmission investigations: A systematic review and meta-analysis.
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Lewis HC, Marcato AJ, Meagher N, Valenciano M, Villanueva-Cabezas JP, Spirkoska V, Fielding JE, Karahalios A, Subissi L, Nardone A, Cheng B, Rajatonirina S, Okeibunor J, Aly EA, Barakat A, Jorgensen P, Azim T, Wijesinghe PR, Le LV, Rodriguez A, Vicari A, Van Kerkhove MD, McVernon J, Pebody R, Price DJ, Bergeri I, Al Ariqi L, Alemu MA, Alvi Y, Bukusi EA, Chung PS, Dambadarjaa D, Das AK, Dub T, Dulacha D, Ebrahim F, González-Duarte MA, Guruge D, Heraud JM, Heredia-Melo DC, Herman-Roloff A, Herring BL, Inbanathan FY, Islam F, Jeewandara KC, Kant S, Khan W, Lako R, Leite J, Malavige GN, Mandakh U, Mariam W, Mend T, Mize VA, Musa S, Nohynek H, Olu OO, Osorio-Merchán MB, Pereyaslov D, Randremanana RV, de Dieu Randria MJ, Ransom J, Saxena S, Sharma P, Sreedevi A, Satheesh M, Subhashini KJ, Tippet-Barr BA, Usha A, Wamala JF, Watare SH, and Yadav K
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- Humans, SARS-CoV-2, Family Characteristics, Pandemics, COVID-19 epidemiology, Influenza, Human
- Abstract
We aimed to estimate the household secondary infection attack rate (hSAR) of SARS-CoV-2 in investigations aligned with the WHO Unity Studies Household Transmission Investigations (HHTI) protocol. We conducted a systematic review and meta-analysis according to PRISMA 2020 guidelines. We searched Medline, Embase, Web of Science, Scopus and medRxiv/bioRxiv for "Unity-aligned" First Few X cases (FFX) and HHTIs published 1 December 2019 to 26 July 2021. Standardised early results were shared by WHO Unity Studies collaborators (to 1 October 2021). We used a bespoke tool to assess investigation methodological quality. Values for hSAR and 95% confidence intervals (CIs) were extracted or calculated from crude data. Heterogeneity was assessed by visually inspecting overlap of CIs on forest plots and quantified in meta-analyses. Of 9988 records retrieved, 80 articles (64 from databases; 16 provided by Unity Studies collaborators) were retained in the systematic review; 62 were included in the primary meta-analysis. hSAR point estimates ranged from 2% to 90% (95% prediction interval: 3%-71%; I
2 = 99.7%); I2 values remained >99% in subgroup analyses, indicating high, unexplained heterogeneity and leading to a decision not to report pooled hSAR estimates. FFX and HHTI remain critical epidemiological tools for early and ongoing characterisation of novel infectious pathogens. The large, unexplained variance in hSAR estimates emphasises the need to further support standardisation in planning, conduct and analysis, and for clear and comprehensive reporting of FFX and HHTIs in time and place, to guide evidence-based pandemic preparedness and response efforts for SARS-CoV-2, influenza and future novel respiratory viruses., (© 2022 World Health Organization; licensed by John Wiley & Sons Ltd. Influenza and Other Respiratory Viruses published by John Wiley & Sons Ltd.)- Published
- 2022
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16. Novel quad-rotor-shaped photovoltaic materials: first example of fused-ring non-fullerene acceptors with proficient photovoltaic properties for high-performance solar cells.
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Yasmeen F, Alvi MU, Alvi Y, Khan MU, Yaqoob J, Hussain R, Alam MM, Imran M, and Rehman MMU
- Abstract
Development of novel materials for organic solar cells is a booming area of current research. Fused-ring electron accepters are the potential agents of revolution in organic photovoltaic devices and revealing high efficiency in organic solar cells. This study highlights the novel quad-rotor-shaped molecules as first example of efficient fused-ring non-fullerene acceptor materials with proficient photovoltaic parameters for their utilization in high-performance organic solar cells. First time, eight quad-rotor-shaped fused-ring electron accepters (QRFR-1-QRFR-8) are developed via modulating end-caps of experimentally synthesized (BFTT-TN) molecule (QRFR). Optoelectronic properties of proposed molecules are determined using frontier molecular orbitals (FMO), UV-Visible, density of state (DOS), overlap DOS (ODOS), transition density matrix (TDM) heat maps, open circuit voltage (V
oc ), binding energies (Eb ), reorganization energy of electron (λe ), hole (λh ), charge transfer analysis, and compared with reference QRFR. All proposed fused-ring electron accepters disclose less energy gap and λmax in near IR region than QRFR after end-capped engineering. Highest Voc with respect to HOMOPM6 -LUMOacceptor is found 1.66 V in QRFR-6 than QRFR (1.63 V). Eb values of QRFR-1-QRFR-8 are found better and comparable with QRFR. The λe is found smaller than QRFR in all molecules except QRFR-5. The proposed quad-rotor-shaped molecules exhibit proficient photovoltaic features and can serve as best candidate for organic solar cells when blended with PM6 film. This study not only enlightens the researchers to use end-capped reforms as effective tactic for designing materials, but also provides novel quad-rotor-shaped materials to experimentalist for synthesis and their usage in future application of organic solar cells., (© 2021. The Author(s), under exclusive licence to Springer-Verlag GmbH Germany, part of Springer Nature.)- Published
- 2021
- Full Text
- View/download PDF
17. Comment on: "Disease-Specific Out-of-Pocket Payments, Catastrophic Health Expenditure and Impoverishment Effects in India: An Analysis of National Health Survey Data".
- Author
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Faizi N and Alvi Y
- Subjects
- Health Surveys, Humans, India, Poverty, Financing, Personal, Health Expenditures
- Published
- 2021
- Full Text
- View/download PDF
18. Blood pressure control measured as "time in range" during initial 24 h for inpatients with spontaneous nontraumatic intracerebral haemorrhage.
- Author
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Khan A, Shaikh N, Alvi Y, Gupta P, Mehdi R, and Siddiqui A
- Subjects
- Blood Pressure, Cerebral Hemorrhage complications, Glasgow Coma Scale, Humans, Retrospective Studies, Hypertension complications, Inpatients
- Abstract
Background and Purpose: Blood pressure (BP) control is an integral part in the management of spontaneous nontraumatic intracerebral haemorrhage. The aim of this study is to propose a novel concept of blood pressure control measured as 'Time in Range'(TiR) and assess its relationship to neurological deterioration., Method: Retrospective study of 120 patients with Intracerebral haemorrhage who were admitted within 6 h of the symptom onset. The hourly BP readings for initial 24 h were studied in the form of time in range (TiR). TiR was defined as the percentage of readings with 'in range' systolic BP (SBP 110-140mmHG) during a unit time period. TiR was correlated with mean SBP at 6,12,18 and 24 h. It was categorized dichotomously as controlled (more than 50%) or not controlled (equal to or less than 50%) and analyzed with the change in Glasgow coma scale (drop of ≥2 units) at 24 h., Results: Correlation of TiR with mean SBP at 6 and 24 h showed significant negative correlation [r = -0.71 (at 6 h); r = -0.88 (at 24 h); p < 0.001]. The association of TiR with neurological deterioration(ND) was measured by change in GCS; with lower TiR associated with higher chances of neurological deterioration at 12 h interval [OR 4.5(1.2-16.8); p = 0.025], but not at 24 h interval [OR 1.4 (0.34-5.44); p = 0.670]., Conclusion: Our novel concept of 'Time in Range'(TiR) was found to be relevant in our study. Its association with mean SBP reflect its potential to be a modality of expressing control of SBP in Spontaneous Nontraumatic Intracerebral Haemorrhage., (Copyright © 2021 Elsevier B.V. All rights reserved.)
- Published
- 2021
- Full Text
- View/download PDF
19. Assessment of the knowledge, preferences and concern regarding the prospective COVID-19 vaccine among adults residing in New Delhi, India - A cross-sectional study.
- Author
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Islam F, Agarwalla R, Panda M, Alvi Y, Singh V, Debroy A, Ray A, Vadnerkar A, and Uttekar S
- Abstract
Background: Understanding the perception and concerns of people about COVID-19 vaccine in developing and populous country like India will help in understanding demand for the vaccine and further tailoring out public health information and education activities. The study was carried out to assess the present state of knowledge people have about the probable vaccine for COVID-19, to know the preferences of respondents about this vaccine and to learn the expectations and apprehensions of people about features of this prospective COVID-19 vaccine residing in the capital city of India., Methods: This cross-sectional study was conducted amongst the residents of Delhi, India from July to October 2020. Both offline and online interview method was used to collect date from 513 participants representing various occupational strata. Data were collected on sociodemographic variable, vaccine acceptance and concerns regarding COVID-19 vaccine., Results: Among the study population, 79.5% said they will take the vaccine while 8.8% said they were not going to take the vaccine and remaining 11.7% had not yet decided about it. More than 50% were willing to pay for the vaccine and 72% felt vaccine should first be given to health workers and high-risk group., Conclusion: The following study has helped to understand the percentage of people who are hesitant to take the vaccine and also the concerns regarding the vaccine. Also since half of the population is willing to pay for the vaccine, a strategic approach considering the various economical classes of people could be applied in a developing country like India., Competing Interests: There are no conflicts of interest., (Copyright: © 2021 Journal of Family Medicine and Primary Care.)
- Published
- 2021
- Full Text
- View/download PDF
20. Qualitative Thematic Analysis of Knowledge and Practices of Surgical Antimicrobial Prophylaxis at a Tertiary Care Teaching Hospital.
- Author
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Khan F, Chaudhary B, Sultan A, Ahmad M, Alvi Y, Shah MS, and Khan HM
- Subjects
- Anti-Bacterial Agents therapeutic use, Guideline Adherence, Hospitals, Teaching, Humans, Surgical Wound Infection drug therapy, Surgical Wound Infection prevention & control, Tertiary Healthcare, Anti-Infective Agents therapeutic use, Antibiotic Prophylaxis
- Abstract
Background: Surgical antimicrobial prophylaxis (SAP) refers to the utilization of antibiotic agents for the prevention of surgical site infections (SSI), to prevent SSI-associated morbidity and mortality, reduce duration and cost of healthcare, and cause minimal adverse drug effects. The adherence rate among surgeons for the available international and national guidelines and optimal practice remains considerably low in many hospitals, especially in developing countries. The objective of this study was to assess the knowledge and compliance rate for SAP guidelines among various surgical specialties and those involved in providing SAP. Methods: An institution-based exploratory, multi-specialty, collective, mixed method approach (qualitative and quantitative) was used to assess the knowledge and compliance rate for SAP guidelines among the consultants and residents of surgical specialties. Quantitative analysis was performed using a pre-tested questionnaire. For qualitative analysis, focus group discussions were conducted. Thematic analysis was conducted by the Theoretical Domains Framework (TDF) and the Capabilities, Opportunities, Motivation and Behaviour (COM-B) model. Results: Twenty-eight focus groups and 16 paired interviews were undertaken. On thematic analysis six significant themes were noted and mapped to the COM-B model, and subthemes mapped to the relevant TDF domains in a combined framework. Key themes recognized were: (1) solitary focus on surgical skills; (2) following the hierarchy is more important than guideline compliance; (3) doubts and overcautious attitude of surgeons hinders appropriate SAP prescribing; (4) non-availability in-hospital supply of antimicrobial agents; (5) patient characteristics and type of surgery play a role in prescribing SAP; and (6) lack of national and local guidelines. Conclusions: The knowledge and attitudes of surgeons toward appropriate SAP prescribing are crucial factors for execution of guidelines. Including them in policy making decisions can help in strong execution of the same.
- Published
- 2021
- Full Text
- View/download PDF
21. World Health Organization Dimensions of Adherence to Antiretroviral Therapy: A Study at Antiretroviral Therapy Centre, Aligarh.
- Author
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Alvi Y, Khalique N, Ahmad A, Khan HS, and Faizi N
- Abstract
Introduction: With the availability of antiretroviral therapy (ART) and subsequent change in the HIV/AIDS disease dynamic to a chronic manageable disease, adherence studies have received increasing attention. However, there is a paucity of studies that have considered World Health Organization (WHO) dimensions of adherence to ART. Therefore, this study was conducted with the objectives of determining the prevalence of adherence and the association of various factors across five WHO dimensions to adherence., Methods: A cross-sectional study was carried out at the ART Centre, Aligarh. A total of 440 adult patients, taking treatment from the ART Centre, Aligarh were selected. A self-reported instrument of missing pills was used to measure adherence. Various factors across five WHO dimensions were studied., Results: Prevalence of adherence in our study was 81.3%. Among the five dimensions of adherence, distance from home (odds ratio [OR] 0.980; 95% confidence interval [CI] 0.964-0.997) among socioeconomic determinants, frequent adherence counseling (OR 8.737; 95% CI 4.076-18.727) among health system-related, drug regimen (OR 2.202; 95% CI 1.023-4.738) and absence of side effects (OR 3.293; 95% CI 1.473-7.365) among therapy related, absence of substance abuse (OR 2.747; 95% CI 1.209-6.243), and perceived change in health status (OR 4.196; 95% CI 1.613-10.915) among patient-related dimension were found to be significantly associated with adherence to ART, while clinical condition dimension did not play a significant role., Conclusion: The ART adherence rate is still below satisfactory levels for long-term viral load suppression. WHO multidimensional approach - which was found to be quite relevant in our study setting - could be applied to effectively solve the adherence problem in our country., Competing Interests: There are no conflicts of interest.
- Published
- 2019
- Full Text
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22. Designer nanojunctions: orienting shaped nanoparticles within polymer thin-film nanocomposites.
- Author
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Gao B, Alvi Y, Rosen D, Lav M, and Tao AR
- Abstract
We demonstrate that polymer-grafted metal nanoparticles of various shapes and dimensions self-assemble into arrays of string-like superstructures upon phase separation within a matrix polymer. Interparticle orientation within these nanocomposites can be dictated by the chain length of the grafted polymer.
- Published
- 2013
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23. Meconium aspiration in neonates: combined obstetric and paediatric intervention improves outcome.
- Author
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Chishty AL, Alvi Y, Iftikhar M, and Bhutta TI
- Subjects
- Female, Humans, Incidence, Infant, Newborn, Intensive Care Units, Neonatal, Male, Meconium Aspiration Syndrome mortality, Meconium Aspiration Syndrome prevention & control, Risk Factors, Survival Rate, Treatment Outcome, Meconium Aspiration Syndrome therapy, Obstetrics methods, Pediatrics methods
- Abstract
All meconium aspiration syndrome cases admitted in the two neonatal units were compared to evaluate the antenatal and natal events including resuscitative measures and outcome of neonates and to confirm the beneficial effects of immediate combined obstetric and paediatric intervention on morbidity and mortality. Neonates managed in nursery at Mayo Hospital (Group 1, n = 44) were delivered at other hospitals and birth centres, underwent resuscitation by obstetricians and/or anaesthetists and then referred. Neonates admitted in the neonatal unit of Lady Willingdon Hospital (Group 2, n = 48) were inborn and resuscitated by paediatric residents. Both groups were comparable for weight, sex, booked status, maturity, history of prolonged labour, fetal distress and Apgar score at 5 minutes. Significant differences were proportion of C-section (62% in Gp 2 v 34% in Gp1), laryngoscopy and tracheal intubation (100% in Gp 2 v 9% in Gp1), time of arrival in the nursery (mean 0.14 hr in Gp 2 v 3.91 hr in Gp 1), persistent cyanosis (43% in Gp 2 v 68% in Gp1), earlier start of feeding (mean 2.4 days in Gp 2 v 3.2 days in group 1) and shorter stay in hospital (2.87 days in Gp 2 v 5 days in Gp 1). 27% cases died in group 2 compared to 47% in group 1 (pvalue = 0.04). Combined immediate obstetric intervention (C-section) and paediatric intervention (laryngoscopy, tracheal intubation, suction, immediate transfer to nursery) led to reduced severity of meconium aspiration syndrome and lower mortality.
- Published
- 1996
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