While bacteria can live without a host, viral particles need to attack the cells and use their machinery to reproduce.
The virus is called SARS-CoV-2. It is a member of a family of coronaviruses. So far there are 7 known coronaviruses that can infect humans.
SARS-CoV, MERS-Cov, and SARS-CoV2 lead to severe diseases in humans.
HKU1, NL63, OC43, and 229E have been associated with milder maladies in humans.
Gene Sequencing shows a significant similarity between humans SARS-CoV-2 to bat’s SARS-Cov-like viruses.
The virus can bind to the ACE2 receptor in pigs, ferrets, cats, and some non-human primates.