SARS-CoV-2 seroprevalence among healthcare workers in Haiti, December 2021

Abstract

Abstract Background: Healthcare workers are an exposed group for SARS-CoV-2, and this exposure is a public health priority. Transmission can occur from infected patients to staff and from infected staff to patients and co-workers, thus undermining the health care system. This study estimated the seroprevalence in this population and identified some associated factors. Methods: We analyzed the exposure of healthcare workers in ten (10) large hospitals providing care to patients with COVID-19 by testing for antibodies to SARS-CoV-2. Potential risk factors such as age, vaccination history, and barrier measures such as masking were explored through a questionnaire. Results: From December 06 to 15, 2021, among 3743 health care workers in major hospitals providing care to patients with COVID-19, a sample of 566 had received serological testing for SARS-CoV-2. The mean age was 39 years, 62% were female, and approximately 12% had hypertension. The vast majority did not reveal any signs or symptoms compatible with COVID-19, and 62% had already received the anti-COVID-19 vaccine. The national prevalence regardless of vaccination status was 44%, with a predominance of male gender, age group 60 and older, and the Western Department. The prevalenceamong unvaccinated persons was 11.59%, and never wearing masks was associated with an increased risk of developing antibodies to SARS-CoV-2. Conclusion: Among health care workers, COVID-19 affects both sexes with a female predominance. The age group over 60 years is the most affected, and not wearing a mask is a risk factor associated with virus detection.