What Is a Coronavirus?
Coronaviruses are a family of viruses known for containing strains that cause potentially deadly diseases in mammals and birds. In humans they’re typically spread via airborne droplets of fluid produced by infected individuals.
Some rare but notable strains, including Wuhan coronavirus (2019-nCoV), and those responsible for severe acute respiratory syndrome (SARS) and Middle East respiratory syndrome (MERS), can cause death in humans.
There are four known genuses in the family, named Alphacoronavirus, Betacoronavirus, Gammacoronavirus, and Deltacoronavirus. The first two only infect mammals, including bats, pigs, cats, and humans. Gammacoronavirus mostly infects birds such as poultry, while Deltacoronavirus can infect both birds and mammals.
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