What is a Coronavirus?
Coronaviruses are a large family of single-stranded RNA viruses that cause mild to moderate upper-respiratory tract illness. Some coronaviruses can only infect humans and we see these cases as the common cold. Other coronaviruses are more dangerous such SARS-CoV-2 (virus that causes the disease COVID-19), SARS-CoV (severe acute respiratory syndrome coronavirus), and MERS-CoV (Middle Eastern respiratory syndrome) are what is known as zoonotic viruses. Zoonotic viruses originate in animals and crossed over to infect humans.