Coronaviruses (CoVs) are a highly diverse family of enveloped positive-sense single-stranded RNA viruses. They infect humans, other mammals and avian species, including livestock and companion animals, and arre a challenge for public health and veterinary public health.
There are found within the order of Nidovirales and the suborder of Coronavirineae lies in the family Coronaviridae.
The coronaviridae family contains a large number of linear single-stranded positive-sense RNA viruses
COVID-19 has 2% mortality rate, is known as the third extremely infective CoV infection, and has a mortality rate less than MERS-CoV and SARS-CoV. The CoV family comprises a major number of positive single-stranded ss (+) RNA viruses that are recognized in mammals. The 2019-nCoV patients showed that the angiotensin-converting enzyme II (ACE2) was the same for SARS-CoV. Structural proteins have an essential role in virus released and budding to various host cells.
References:
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3) Ceraolo and Giorgi (2020)