20 results on '"Castaldi, Silvana"'
Search Results
2. Vaccination Open Day: A Cross-Sectional Study on the 2023 Experience in Lombardy Region, Italy.
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Perrone, Pier Mario, Scarioni, Simona, Astorri, Elisa, Marrocu, Chiara, Tiwana, Navpreet, Letzgus, Matteo, Borriello, Catia, and Castaldi, Silvana
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- 2024
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3. The Effectiveness of the Third Dose of COVID-19 Vaccine: When Should It Be Performed?
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Biganzoli, Giacomo, Mendola, Marco, Perrone, Pier Mario, Antonangeli, Laura Maria, Longo, Anna Beatrice Elena, Carrer, Paolo, Colosio, Claudio, Consonni, Dario, Marano, Giuseppe, Boracchi, Patrizia, Biganzoli, Elia, and Castaldi, Silvana
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BOOSTER vaccines ,COVID-19 vaccines ,VACCINE effectiveness ,INDUSTRIAL hygiene ,MEDICAL personnel - Abstract
Background: COVID-19 vaccination is the most significant step toward the long-term mitigation of SARS-CoV-2-related complication, avoiding disease and death and decreasing virus spread. This study aimed to evaluate, in a real-world setting, booster dose effectiveness to reduce COVID-19 risk considering the amount of time after the end of the two-dose vaccination cycle. A sub-analysis was conducted to adjust the booster dose effect for occupational and demographic factors. Methods: About 16,000 COVID-19-vaccinated HCWs of three University Hospital Networks in Milan (HN1/HN2/HN3) were included in the study. Data were collected by Occupational Health Physicians of the HNs within specific computerized databases. Results: In univariable analysis, booster dose administration displayed a slightly higher risk of infection with respect to not receiving it, OR = 1.18, with 95% confidence interval (C.I) [0.99, 1.41]. When the model was adjusted with the modulating effect of time from the completion of the vaccination cycle on booster dose administration, the latter resulted in strong protective effect against infection, OR = 0.43, 95% CI [0.26, 0.74]. However, considering the modifying influence of time from the vaccination cycle's completion, the administration of booster doses appeared to have a protective effect against infection. In HN1, students and resident physicians displayed lower odds of infection with respect to physicians. Lastly, a non-linear effect of age was reported. Conclusions: Our findings suggest that the correct timing in vaccine scheduling and administration is critical to vaccine effectiveness. These findings, applicable to all vaccinations, should help in setting up more effective vaccination strategies. [ABSTRACT FROM AUTHOR]
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- 2024
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4. Climate Change Perception and Mental Health. Results from a Systematic Review of the Literature.
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Gianfredi, Vincenza, Mazziotta, Francesco, Clerici, Giovanna, Astorri, Elisa, Oliani, Francesco, Cappellina, Martina, Catalini, Alessandro, Dell'Osso, Bernardo Maria, Pregliasco, Fabrizio Ernesto, Castaldi, Silvana, and Benatti, Beatrice
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CLIMATE change ,CLIMATE change & health ,MENTAL health ,ECO-anxiety ,ADJUSTMENT disorders - Abstract
Climate change is one of the main global challenges and influences various aspects of human health. Numerous studies have indeed demonstrated an association between extreme climate-related events and physical and mental health outcomes, but little is still known about the association between the perception/awareness of climate change and mental health. In accordance with the PRISMA 2020 guidelines, a search was conducted on PubMed and Scopus. The protocol was registered on PROSPERO. The included studies were original observational studies published in English, reporting the association between the perception/awareness of climate change and mental health. A total of 3018 articles were identified. A total of 10 observational studies were included. The period covered in the included studies ranged between 2012 and 2022. Climate change perception is consistently associated with adverse mental health effects across different types of estimates. In particular, the studies identified an association between a higher level of perception/awareness of climate change and depression, anxiety, eco-anxiety, stress, adjustment disorder, substance use, dysphoria, and even thoughts of suicide. Qualitative data underscore the impact on daily activities, contributing to feelings of loss and suicidal ideation. Moreover, climate change perception correlates with lower well-being and resilience. The association between awareness of climate change and mental health is a complex and still poorly explored phenomenon. The main limitations are the high heterogeneity in terms of exposure assessment and data reporting, which hinders quantitative analysis. These results show that climate change perception impacts mental health. Better understanding the phenomenon represents an opportunity to inform public health interventions that promote mental well-being. [ABSTRACT FROM AUTHOR]
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- 2024
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5. COVID-19 Vaccine Knowledge, Attitude, Acceptance and Hesitancy among Pregnancy and Breastfeeding: Systematic Review of Hospital-Based Studies.
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Gianfredi, Vincenza, Berti, Alessandro, Stefanizzi, Pasquale, D'Amico, Marilena, De Lorenzo, Viola, Moscara, Lorenza, Di Lorenzo, Antonio, Venerito, Vincenzo, and Castaldi, Silvana
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COVID-19 vaccines ,HESITATION ,VACCINE hesitancy ,BREASTFEEDING ,PREGNANT women - Abstract
The risk of unfavourable outcomes for SARS-CoV-2 infection is significant during pregnancy and breastfeeding. Vaccination is a safe and effective measure to lower this risk. This study aims at reviewing the literature concerning the anti-SARS-CoV-2 vaccine's acceptance/hesitancy among pregnant and breastfeeding women attending hospital facilities. A systematic review of literature was carried out. Hospital-based observational studies related to vaccination acceptance, hesitancy, knowledge and attitude among pregnant and breastfeeding women were included. Determinants of acceptance and hesitancy were investigated in detail. Quality assessment was done via the Johann Briggs Institute quality assessment tools. After literature search, 43 studies were included, 30 of which only focused on pregnant women (total sample 25,862 subjects). Sample size ranged from 109 to 7017 people. Acceptance of the SARS-CoV-2 vaccine ranged from 16% to 78.52%; vaccine hesitancy ranged between 91.4% and 24.5%. Fear of adverse events for either the woman, the child, or both, was the main driver for hesitancy. Other determinants of hesitancy included religious concerns, socioeconomic factors, inadequate information regarding the vaccine and lack of trust towards institutions. SARS-CoV-2 vaccine hesitancy in hospitalized pregnant women appears to be significant, and efforts for a more effective communication to these subjects are required. [ABSTRACT FROM AUTHOR]
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- 2023
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6. A Flexible Regression Modeling Approach Applied to Observational Laboratory Virological Data Suggests That SARS-CoV-2 Load in Upper Respiratory Tract Samples Changes with COVID-19 Epidemiology.
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Pellegrinelli, Laura, Luconi, Ester, Marano, Giuseppe, Galli, Cristina, Delbue, Serena, Bubba, Laura, Binda, Sandro, Castaldi, Silvana, Biganzoli, Elia, Pariani, Elena, and Boracchi, Patrizia
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QUANTILE regression ,REGRESSION analysis ,SARS-CoV-2 ,COVID-19 ,MEDIAN (Mathematics) ,VIRAL load - Abstract
(1) Background. Exploring the evolution of SARS-CoV-2 load and clearance from the upper respiratory tract samples is important to improving COVID-19 control. Data were collected retrospectively from a laboratory dataset on SARS-CoV-2 load quantified in leftover nasal pharyngeal swabs (NPSs) collected from symptomatic/asymptomatic individuals who tested positive to SARS-CoV-2 RNA detection in the framework of testing activities for diagnostic/screening purpose during the 2020 and 2021 winter epidemic waves. (2) Methods. A Statistical approach (quantile regression and survival models for interval-censored data), novel for this kind of data, was applied. We included in the analysis SARS-CoV-2-positive adults >18 years old for whom at least two serial NPSs were collected. A total of 262 SARS-CoV-2-positive individuals and 784 NPSs were included: 193 (593 NPSs) during the 2020 winter wave (before COVID-19 vaccine introduction) and 69 (191 NPSs) during the 2021 winter wave (all COVID-19 vaccinated). We estimated the trend of the median value, as well as the 25th and 75th centiles of the viral load, from the index episode (i.e., first SARS-CoV-2-positive test) until the sixth week (2020 wave) and the third week (2021 wave). Interval censoring methods were used to evaluate the time to SARS-CoV-2 clearance (defined as Ct < 35). (3) Results. At the index episode, the median value of viral load in the 2021 winter wave was 6.25 log copies/mL (95% CI: 5.50–6.70), and the median value in the 2020 winter wave was 5.42 log copies/mL (95% CI: 4.95–5.90). In contrast, 14 days after the index episode, the median value of viral load was 3.40 log copies/mL (95% CI: 3.26–3.54) for individuals during the 2020 winter wave and 2.93 Log copies/mL (95% CI: 2.80–3.19) for those of the 2021 winter wave. A significant difference in viral load shapes was observed among age classes (p = 0.0302) and between symptomatic and asymptomatic participants (p = 0.0187) for the first wave only; the median viral load value is higher at the day of episode index for the youngest (18–39 years) as compared to the older (40–64 years and >64 years) individuals. In the 2021 epidemic, the estimated proportion of individuals who can be considered infectious (Ct < 35) was approximately half that of the 2020 wave. (4) Conclusions. In case of the emergence of new SARS-CoV-2 variants, the application of these statistical methods to the analysis of virological laboratory data may provide evidence with which to inform and promptly support public health decision-makers in the modification of COVID-19 control measures. [ABSTRACT FROM AUTHOR]
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- 2023
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7. A Systematic Review of Population-Based Studies Assessing Knowledge, Attitudes, Acceptance, and Hesitancy of Pregnant and Breastfeeding Women towards the COVID-19 Vaccine.
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Gianfredi, Vincenza, Stefanizzi, Pasquale, Berti, Alessandro, D'Amico, Marilena, De Lorenzo, Viola, Lorenzo, Antonio Di, Moscara, Lorenza, and Castaldi, Silvana
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PREGNANT women ,COVID-19 vaccines ,VACCINE hesitancy ,HESITATION ,ATTITUDE (Psychology) - Abstract
The anti-SARS-CoV-2 vaccination is recommended for pregnant women due to the high risk of complications. However, pregnancy has been associated with vaccine hesitancy. Our review aims at summarizing the existing literature about anti-SARS-CoV-2 vaccine hesitancy in pregnant and lactating women. The research was conducted on PubMed/MEDLINE, ExcerptaMedica Database (EMBASE), and Scopus, according to PRISMA guidelines. Articles regarding the COVID-19 vaccine's acceptance and/or refusal by pregnant and lactating women were selected. Only observational, population-based studies were included. The Joanna Briggs Institute quality assessment tools were employed. A total of 496 articles were retrieved, and after the selection process, 21 papers were included in the current analysis. All the included studies were cross-sectional, mostly from Europe and North America. The sample sizes ranged between 72 and 25,111 subjects. All of them included pregnant subjects, except one that focused on breastfeeding women only. Vaccine hesitancy rates ranged from 26% to 57% among different studies. Fear of adverse events and lack of knowledge were shown to be the main drivers of hesitancy. Approximately half of the studies (11/21) were classified as low quality, the remaining (9/21) were classified as moderate, and only one study was classified as high quality. Primigravidae were also shown to be more likely to accept anti-SARS-CoV-2 vaccination. Our findings confirm significant anti-SARS-CoV-2 vaccine hesitancy among pregnant women. Information gaps should be addressed to contain concerns related to adverse events. [ABSTRACT FROM AUTHOR]
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- 2023
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8. Knowledge, Attitudes, Behavior, Acceptance, and Hesitancy in Relation to the COVID-19 Vaccine among Pregnant and Breastfeeding Women: A Systematic Review Protocol.
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Gianfredi, Vincenza, Berti, Alessandro, D'Amico, Marilena, De Lorenzo, Viola, and Castaldi, Silvana
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MOTHERS ,VACCINATION ,ATTITUDES of mothers ,COVID-19 ,ATTITUDE (Psychology) ,COVID-19 vaccines ,SYSTEMATIC reviews ,PREGNANT women ,HEALTH literacy ,BREASTFEEDING ,HEALTH behavior ,VACCINE hesitancy - Abstract
A new coronavirus, SARS-CoV-2, was identified at the end of 2019. It swiftly spread all over the world, affecting more than 600 million people and causing over 6 million deaths worldwide. Different COVID-19 vaccines became available by the end of 2020. Healthcare workers and more vulnerable people (such as the elderly and those with comorbidities) were initially prioritized, followed by the entire population, including pregnant and breastfeeding women. Despite the safety and efficacy of COVID-19 vaccines, a certain level of skepticism was expressed, including among pregnant and breastfeeding women. There were several reasons for this reluctancy, among them, fear of side-effects for both women and fetuses. Nevertheless, acceptance, as well as hesitancy, were time, country and vaccine specific. This review will collect available evidence assessing knowledge, attitudes, behaviour, practice and acceptance/hesitancy of pregnant/breastfeeding women in relation to the COVID-19 vaccination. The PubMed/MEDLINE, Scopus and EMBASE databases will be consulted. A predefined search strategy that combines both free text and MESH terms will be used. The systematic review will adhere to the PRISMA guidelines and the results will be reported in both narrative and summary tables. A meta-analysis will be conducted if data are available. [ABSTRACT FROM AUTHOR]
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- 2023
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9. Adherence to Mediterranean Diet and Risk of Pancreatic Cancer: Systematic Review and Meta-Analysis.
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Nucci, Daniele, Nardi, Mariateresa, Cinnirella, Andrea, Campagnoli, Emanuela, Maffeo, Manuel, Perrone, Pier Mario, Shishmintseva, Viktoriia, Grosso, Francesca Maria, Castrofino, Ambra, Castaldi, Silvana, Romanò, Luisa, and Gianfredi, Vincenza
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- 2023
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10. Evaluation of Six Years of Appropriateness Level of Blood Transfusion in a Pediatric Ward.
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Perrone, Pier Mario, Milani, Gregorio Paolo, Dellepiane, Rosa Maria, Petaccia, Antonella, Prati, Daniele, Agostoni, Carlo, Marchisio, Paola Giovanna, and Castaldi, Silvana
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- 2023
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11. Surveillance of Severe Acute Respiratory Infection and Influenza Vaccine Effectiveness among Hospitalized Italian Adults, 2021/22 Season.
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Panatto, Donatella, Domnich, Alexander, Chironna, Maria, Loconsole, Daniela, Napoli, Christian, Torsello, Alessandra, Manini, Ilaria, Montomoli, Emanuele, Pariani, Elena, Castaldi, Silvana, Orsi, Andrea, and Icardi, Giancarlo
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INFLUENZA ,FLU vaccine efficacy ,ITALIANS ,RESPIRATORY infections ,VACCINE effectiveness ,INFLUENZA vaccines - Abstract
Following an extremely low incidence of influenza during the first waves of the ongoing COVID-19 pandemic, the 2021/22 Northern Hemisphere winter season saw a resurgence of influenza virus circulation. The aim of this study was to describe epidemiology of severe acute respiratory infections (SARIs) among Italian adults and estimate the 2021/22 season influenza vaccine effectiveness. For this purpose, a test-negative case-control study was conducted in a geographically representative sample of Italian hospitals. Of 753 SARI patients analyzed, 2.5% (N = 19) tested positive for influenza, most of which belonged to the A(H3N2) subtype. Phylogenetic analysis showed that these belonged to the subclade 3C.2a1b.2a.2, which was antigenically different from the 2021/22 A(H3N2) vaccine component. Most (89.5%) cases were registered among non-vaccinated individuals, suggesting a protective effect of influenza vaccination. Due to a limited number of cases, vaccine effectiveness estimated through the Firth's penalized logistic regression was highly imprecise, being 83.4% (95% CI: 25.8–97.4%) and 83.1% (95% CI: 22.2–97.3%) against any influenza type A and A(H3N2), respectively. Exclusion of SARS-CoV-2-positive controls from the model did not significantly change the base-case estimates. Within the study limitations, influenza vaccination appeared to be effective against laboratory-confirmed SARI. [ABSTRACT FROM AUTHOR]
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- 2023
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12. Thyroid Function and Metabolic Syndrome in Children and Adolescents with Neuromotor Disability.
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Calcaterra, Valeria, Biganzoli, Giacomo, Ferraro, Simona, Mari, Alessandra, Mandelli, Anna, Fabiano, Valentina, Carlucci, Patrizia, Pelizzo, Gloria, Zoia, Elena, Lanfranchi, Giulia, Castaldi, Silvana, Boracchi, Patrizia, Biganzoli, Elia, and Zuccotti, Gianvincenzo
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THYROID gland function tests ,NEUROLOGICAL disorders ,METABOLIC syndrome ,FACTOR analysis ,DESCRIPTIVE statistics ,LOGISTIC regression analysis ,CHILDREN ,ADOLESCENCE - Abstract
Thyroid function plays a crucial role in nervous system integrity and metabolic homeostasis. We evaluated the pattern of TSH, FT4 and FT3 release in children with neuromotor impairment (NI) in relationship with metabolic syndrome (MS). We enrolled 55 patients with NI and 30 controls. Clinical parameters, thyroid function and MS presence were recorded. Principal component analysis (PCA), cluster analysis, and logistic regression models were performed. MS was detected in 54.5% of patients. Four clusters were identified: the first one included only controls and, contrasting with cluster 4, was exclusively characterized by children with disability and MS. This latter showed increased FT4 and FT3 and decreased TSH levels. Cluster 2, characterized by disability without MS showed high FT4 and FT3, whereas cluster 3 with low FT4 and FT3 mainly included disability (90%) and showed prevalent MS (57%). The association between TSH and NI is represented by a U-shape structure. The TSH, FT3 and FT4 release patterns may reflect thyrotropic adaptation, allostatic response and compensatory mechanisms. These mechanisms, found in both MS and disability, show that the odds of having a condition of NI with or without MS increase as the TSH values deviate, in both directions, from a value of 2.5 mLU/mL. [ABSTRACT FROM AUTHOR]
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- 2022
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13. Influenza Vaccination Campaign during the COVID-19 Pandemic: The Experience of a Research and Teaching Hospital in Milan
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Perrone, Pier Mario, Biganzoli, Giacomo, Lecce, Maurizio, Campagnoli, Emanuela Maria, Castrofino, Ambra, Cinnirella, Andrea, Fornaro, Federica, Gallana, Claudia, Grosso, Francesca Maria, Maffeo, Manuel, Shishmintseva, Viktoriia, Pariani, Elena, and Castaldi, Silvana
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Attitude of Health Personnel ,Immunization Programs ,SARS-CoV-2 ,Health Personnel ,Vaccination ,vaccination refusal ,Infant, Newborn ,COVID-19 ,vaccination adherence ,Article ,healthcare workers vaccination ,Italy ,Influenza Vaccines ,Surveys and Questionnaires ,Influenza, Human ,Medicine ,Humans ,influenza vaccine ,Hospitals, Teaching ,Pandemics - Abstract
Background: During the COVID-19 pandemic, more than ever, optimal influenza vaccination coverage among healthcare workers (HCWs) is crucial to avoid absenteeism and disruption of health services, as well as in-hospital influenza outbreaks. The aim of this study is to analyze the 2020 influenza vaccination campaign, comparing it with the previous year’s in a research and teaching hospital in Northern Italy. Methods: adopting an approach based on combined strategies, three interventions were deployed: a promotional and educational campaign, vaccination delivery through both ad hoc and on-site ambulatories, and a gaming strategy. Personal data and professional categories were collected and analyzed using univariate logistic regression. Vaccinated HCWs were asked to fill in a questionnaire to describe their reasons for vaccination adherence. Results: the vaccination coverage rate (VCR) was 43.1%, compared to 21.5% in 2019. The highest increase was registered among administrative staff (308.3%), while physicians represent the most vaccinated category (n = 600). Moreover, residents (prevalence ratio (PR): 1.12, 95% CI 1.04–1.20), as well as intensive care (PR: 1.44, 95% CI: 1.24–1.69) and newborn workers (PR: 1.41, 95% CI: 1.20–1.65) were, respectively, the categories most frequently vaccinated for the first time. Conclusion: the significant increase in vaccination coverage rate confirms the suitability of the combined strategy of delivering the flu vaccination campaign and represents a first step towards reaching WHO recommended vaccination rates.
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- 2021
14. COVID-19 and Influenza Vaccination Campaign in a Research and University Hospital in Milan, Italy.
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Lecce, Maurizio, Biganzoli, Giacomo, Agnello, Luca, Belisario, Ignazio, Cicconi, Giovanni, D'Amico, Marilena, De Giorgi, Francesca, Ferilli, Angelo, Ferraguzzi, Gaia, Guzzardi, Fabio, Lanzillotti, Danilo, Lattanzio, Roberta, Marrocu, Chiara, Noto, Maria Emanuela, Piccinelli, Sara, Sabatelli, Noemi, Santisteban, Sheila, Sharma, Sudwaric, Tognaccini, Livia, and Castaldi, Silvana
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- 2022
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15. Exploring the Online Health Information-Seeking Behavior in a Sample of Italian Women: The "SEI Donna" Study.
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Covolo, Loredana, Guana, Miriam, Bonaccorsi, Guglielmo, Brunelli, Laura, Castaldi, Silvana, De Donno, Antonella, Mereu, Alessandra, Verani, Marco, and Gelatti, Umberto
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- 2022
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16. Tdap Booster Vaccination for Adults: Real-World Adherence to Current Recommendations in Italy and Evaluation of Two Alternative Strategies.
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Lecce, Maurizio, Perrone, Pier Mario, and Castaldi, Silvana
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- 2022
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17. Increased Risk of Urticaria/Angioedema after BNT162b2 mRNA COVID-19 Vaccine in Health Care Workers Taking ACE Inhibitors.
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Cugno, Massimo, Consonni, Dario, Lombardi, Andrea, Bono, Patrizia, Oggioni, Massimo, Uceda Renteria, Sara, Pesatori, Angela Cecilia, Castaldi, Silvana, Riboldi, Luciano, Bordini, Lorenzo, Nava, Carlo Domenico, Ceriotti, Ferruccio, Torri, Adriana, Tafuri, Francesco, Ghigliazza, Gabriele, Peyvandi, Flora, Bandera, Alessandra, and Gori, Andrea
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MEDICAL personnel ,COVID-19 vaccines ,ACE inhibitors ,URTICARIA ,ANGIONEUROTIC edema ,PHYSICIANS - Abstract
Urticarial eruptions and angioedema are the most common cutaneous reactions in patients undergoing mRNA COVID-19 vaccinations. The vasoactive peptide bradykinin has long been known to be involved in angioedema and recently also in urticaria. Bradykinin is mainly catabolized by angiotensin-converting enzyme (ACE), which is inhibited by ACE inhibitors, a commonly employed class of antihypertensive drugs. We evaluated the risk of developing urticaria/angioedema after inoculation with the BNT162b2 mRNA COVID-19 vaccine in a population of 3586 health care workers. The influences of ACE inhibitors and selected potential confounding variables (sex, age, previous SARS-CoV-2 infection, and allergy history) were evaluated by fitting univariate and multivariable Poisson regression models. The overall cumulative incidence of urticaria/angioedema was 1.8% (65 out of 3586; 95% CI: 1.4–2.3%). Symptoms were mild, and no subject consulted a physician. Subjects taking ACE inhibitors had an adjusted three-fold increased risk of urticaria/angioedema (RR 2.98, 95% CI: 1.12–7.96). When we restricted the analysis to those aged 50 years or more, the adjusted RR was 3.98 (95% CI: 1.44–11.0). In conclusion, our data indicate that subjects taking ACE inhibitors have an increased risk of urticaria/angioedema after vaccination with the BNT162b2 mRNA COVID-19 vaccine. Symptoms are mild and self-limited; however, they should be considered to adequately advise subjects undergoing vaccination. [ABSTRACT FROM AUTHOR]
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- 2021
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18. Nasopharyngeal Testing among Healthcare Workers (HCWs) of a Large University Hospital in Milan, Italy during Two Epidemic Waves of COVID-19.
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Comelli, Agnese, Consonni, Dario, Lombardi, Andrea, Viero, Giulia, Oggioni, Massimo, Bono, Patrizia, Uceda Renteria, Sara Colonia, Ceriotti, Ferruccio, Mangioni, Davide, Muscatello, Antonio, Piatti, Alessandra, Pesatori, Angela Cecilia, Castaldi, Silvana, Riboldi, Luciano, Bandera, Alessandra, and Gori, Andrea
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- 2021
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19. 2019 Influenza Vaccination Campaign in an Italian Research and Teaching Hospital: Analysis of the Reasons for Its Failure.
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Maffeo, Manuel, Luconi, Ester, Castrofino, Ambra, Campagnoli, Emanuela Maria, Cinnirella, Andrea, Fornaro, Federica, Gallana, Claudia, Perrone, Pier Mario, Shishmintseva, Viktoriia, Pariani, Elena, and Castaldi, Silvana
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- 2020
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20. Influenza Vaccination in Italian Healthcare Workers (2018–2019 Season): Strengths and Weaknesses. Results of a Cohort Study in Two Large Italian Hospitals.
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Panatto, Donatella, Lai, Piero Luigi, Mosca, Stefano, Lecini, Elvina, Orsi, Andrea, Signori, Alessio, Castaldi, Silvana, Pariani, Elena, Pellegrinelli, Laura, Galli, Cristina, Anselmi, Giovanni, and Icardi, Giancarlo
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INFLUENZA vaccines ,VACCINE effectiveness ,COHORT analysis ,INFLUENZA viruses ,MEDICAL care - Abstract
Background: Annual vaccination is the most effective way to combat influenza. As influenza viruses evolve, seasonal vaccines are updated annually. Within the European project Development of Robust and Innovative Vaccine Effectiveness (DRIVE), a cohort study involving Italian healthcare workers (HCWs) was carried out during the 2018-2019 season. Two aims were defined: to measure influenza vaccine effectiveness (IVE) against laboratory-confirmed influenza cases and to conduct an awareness-raising campaign to increase vaccination coverage. Methods: Each subject enrolled was followed up from enrollment to the end of the study. Each HCW who developed ILI was swabbed for laboratory confirmation of influenza. Influenza viruses were identified by molecular assays. A Cox regression analysis, crude and adjusted for confounding variables, was performed to estimate the IVE. Results: Among the 4483 HCWs enrolled, vaccination coverage was 32.5%, and 308 ILI cases were collected: 23.4% were positive for influenza (54.2% A(H1N1) pdm09; 45.8% A(H3N2)). No influenza B viruses were detected. No overall IVE was observed. Analyzing the subtypes of influenza A viruses, the IVE was estimated as 45% (95% CI: -59 to 81) for A(H1N1) pdm09. Conclusions: Vaccination coverage among HCWs increased. Study difficulties and the circulation of drifted variants of A(H3N2) could partly explain the observed IVE. [ABSTRACT FROM AUTHOR]
- Published
- 2020
- Full Text
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