journal of sun life gene medical science research ( volume 2, no.1 ,2022) #covid 19

I. BACKGROUND Coronavirus disease 2019 is an infectious disease caused by severe acute respiratory syndrome coronavirus 2 (SARS-CoV2) and is responsible for the COVID-19 pandemic. SARS-CoV2 is a novel severe acute respiratory syndrome coronavirus and was first detected and isolated from three individuals in Wuhan, China. The SARS-CoV2 is closely linked to the 2003 SARS-CoV and is currently thought to have zoonotic origin.