"Coronaviruses are a group of common viruses. They are named for the crown-like spikes on the surface of the virus. Some coronaviruses only affect animals, but others can also affect humans. Most people get infected with human coronaviruses at some time in their life.
Human coronaviruses cause respiratory illnesses. There are several different types of coronaviruses, including those that cause severe acute respiratory syndrome (SARS), Middle East respiratory syndrome (MERS), and coronavirus disease 2019 (COVID-19)."