What is coronavirus?

Coronaviruses (CoVs) are a huge family of viruses (with the largest genome size of 26-32 kilobases in RNA viruses) which are very common in various animals and very rare in humans. CoVs are named for their corona or crown-like appearance under the microscope, as they are surrounded with pointed structures. NL63, OC43, 229EHKU1, and 2019-nCoV (Wuhan coronavirus) are some of the types of CoVs that can infect humans. They are zoonotic in nature, which means they can spread from animals to humans.