SARS-CoV-2 Seroprevalence in Healthcare Workers before the Vaccination in Poland: Evolution from the First to the Second Pandemic Outbreak
| Autor: | Izabela Korona-Głowniak, Michał Mielnik, Martyna Podgajna, Ewelina Grywalska, Marek Hus, Katarzyna Matuska, Beata Wojtysiak-Duma, Dariusz Duma, Andrzej Glowniak, Anna Malm |
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| Rok vydání: | 2022 |
| Předmět: |
Adult
Male SARS-CoV-2 Health Toxicology and Mutagenesis Health Personnel Vaccination Public Health Environmental and Occupational Health virus diseases COVID-19 Middle Aged Antibodies Viral Seroepidemiologic Studies Humans Female Poland healthcare workers IgG/IgA seroprevalence risk factors Pandemics |
| Zdroj: | International Journal of Environmental Research and Public Health; Volume 19; Issue 4; Pages: 2319 |
| ISSN: | 1660-4601 |
| Popis: | Healthcare workers (HCWs) are on the frontline, struggling with the pandemic caused by severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2). To describe recent or past infections, the serological assays enabled the assessment of the immune response developed in coronavirus disease (COVID-19) in the period when testing was hardly available. In this study, we investigated SARS-CoV-2 seroprevalence in HCWs in a Polish teaching hospital and the Regional Occupational Medicine Center after both the first and the second waves. ELISA-based tests for anti-SARS-CoV-2 IgA and IgG were used to determine immune response to SARS-CoV-2 in volunteer HCWs who worked in those institutions in May 2020 (208 participants aged 47.1 ± 12.5, 88% women) and in December 2020 (179 participants aged 45.2 ± 12.4, 86% woman). Risk factors for seropositivity were also assessed using a questionnaire filled out by all participants. We reported a significant increase in seroprevalence after the second wave (22.9%) compared with the first outbreak (2.4%) (OR 12.1; 95%CI 4.6–31.3; p < 0.0001). An association between IgG seroprevalence and severity of infections was noted. Furthermore, we demonstrated that amongst medical personnel, nurses exhibited a proportionally higher SARS-CoV-2 seroprevalence. Moreover, given the high seroprevalence in non-clinical group of HCWs, we suggest that community transmission can play a superior role to workplace exposure. |
| Databáze: | OpenAIRE |
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