A Cohort Study of Seroprevalence of Antibodies Against SARS-CoV-2 Infe

Introduction

Since the emergence of the severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), the entire world had been threatened.¹ As of June 2022, nearly 538 million cases of coronavirus disease 2019 (COVID-19) have been reported with more than 6.3 million deaths worldwide.² The pandemic has affected the healthcare systems and resources severely in many countries, especially with the healthcare workers (HCWs) in the highest-risk…