COVID-19 (Corona Virus disease 2019) is the respiratory infectious disease caused by a novel coronavirus that
has not been previously identifi ed in humans.
The outbreak began in December 2019.
Reported illness have ranged from mild respiratory symptoms with fever, cough, and shortness of breath to severe
illness and death.
Most estimates of the incubation period for COVID-19 range from 1-14 days.
The case fatality rate is around 2%.
The novel coronavirus (nCoV) named as SARS-CoV-2
beta-coronavirus like MERS-CoV and SARS-CoV.
All three of these viruses have their origins in bats.
Sequencing analysis of multiple viral strains from COVID-19 patients suggested that wild animal acted as the
natural reservoir for the virus.
The virus can spread from person to person. The virus is mainly transmitted through contact with respiratory
droplets.