COVID-19 events:COronaVIrus Disease of 2019 (COVID-19). The coronavirus was first identified in 1965 and later found various typesof human coronavirus including the dangerous NL63 and HKU1.Its seriousness was realized in 2003 in Hong Kong. World HealthOrganization (WHO) found several Severe Acute RespiratorySyndrome coronavirus like Sars-Cov, Sars-Cov-1 and Sars-Cov-2existed in human and animals like bats etc.