Abstract
The newly emerged novel coronavirus (COVID-19) is highly contagious, large enveloped, single-stranded, nonsegmented, positive-sense RNA viruse that belong to coronaviridae family and genus Beta coronavirus The viruses of coronaviridae family are further divided into two subfamilies;Middle East respiratory syndrome coronavirus and severe acute respiratory syndrome coronavirus COVID-19 show close similarities to SARS-CoV due to phylogenetic relationship and genome structure Word Health Organisation has designated the current pandemic of SARS-CoV-2 infection as COVID-19 The virus shows high infectivity and mainly transmitted in the form of droplets with an incubation period of about 4-5 days The onset of symptoms in patients is usually within 11-12 days Here, Rao and Gupta discuss the immunology of COVID-19
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