Seroprevalence of Antibodies against SARS COV- 2 among Health Care Workers at Tertiary Care Hospital, Uttarakhand: A Retrospective study

Background: The number of confirmed SARS-CoV-2 infections is vastly underestimated. In this context, Seroprevalence surveys are of utmost importance to assess the proportion of the population that has already developed antibodies against the virus and might potentially be protected against subsequent infection. Health care workers face greater risk of developing SARS-CoV-2. Therefore, present retrospective study was undertaken to estimate the prevalence of antibodies against SARS-CoV-2 among healthcare workers at tertiary care institute, Uttarakhand. Material: and Methods : Data was gathered from Hospital records of 704 healthcare workers admitted at COVID 19 Unit and attended Covid-OPD of tertiary care institute, Uttarakhand in-between 15th July to 14th Aug 2020. Result: Out of the 704 recruited participants, 14 (1.99%) were seropositive for IgG antibodies against SARS-CoV-2. The cumulative prevalence of SARS-CoV-2 infection (presence of antibodies or past or current positive RT-PCR) was 4.40%. Conclusion: The present study shows a low prevalence of SARS-CoV-2 IgG antibodies among health care workers. In addition, posting in COVID-19-positive areas was not associated with increased seropositivity. More studies are warranted to assess IgG/IgM antibodies against SARS-CoV-2 among those HCW who are exposed to COVID-19 patients.