After the discovery of human coronavirus from the samples of human respiratory tract in 1960 by Dr June Almeida several years elapsed before epidemics occurred in China in 2002-2003 as SARS-CoV and epidemics in Middle East countries in 2012-2014 as MERS-CoV But recently in December, 2019 in Wuhan in China the novel coronavirus started its journey and ultimately spread worldwide to involve millions of people and took the life of more than 1 25 lakh of affected patients There are recurrent antigenic changes in this virus, SARS-CoV-2, which has to be determined by the scientists all over the world to discover the definite medicine as well as vaccines for prevention
Virology and pathogenesis of COVID-19