A cross sectional study found differential risks for COVID-19 seropositivity amongst health care professionals in Chile
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2022Metadata
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Zúñiga, Marcela
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A cross sectional study found differential risks for COVID-19 seropositivity amongst health care professionals in Chile
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Objective: Health care workers (HCWs) are at increased risk for SARS-CoV-2 infection, however not all face the same risk. We aimed to determine IgG/IgM prevalence and risk factors associated with seropositivity in Chilean HCWs. Study Design and Setting: This was a nationwide, cross-sectional study including a questionnaire and COVID-19 lateral flow IgG/IgM antibody testing. All HCWs in the Chilean public health care system were invited to participate following the country’s first wave. Results: IgG/IgM positivity in 85,529 HCWs was 7.2%, ranging from 1.6% to 12.4% between regions. Additionally, 9.7% HCWs reported a positive PCR of which 47% were seropositive. Overall, 10,863 (12.7%) HCWs were PCR and/or IgG/IgM positive. Factors independently associated with increased odds ratios (ORs) for seropositivity were: working in a hospital, night shifts, contact with Covid-19, using public transport, male gender, age>45, BMI ≥30, and reporting ≥2 symptoms. Stress and/or mental health disorder and smoking were associated with decreased ORs. These factors remained significant when including PCR positive cases in the model. Conclusions: HCWs in the hospital were at highest risk for COVID-19, and several independent risk factors for seropositivity and/or PCR positivity were identified.
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URI: https://repositorio.uchile.cl/handle/2250/186347
DOI: 10.1016/j.jclinepi.2021.12.026
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Journal of Clinical Epidemiology 144 (2022) 72–83
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