The corona virus belongs to a large family of viruses that can cause various diseases. The course of the disease can range from a normal cold to a severe respiratory infection (SARS). It is transferable from person to person via droplet infection. In addition to humans, various animals can also be infected.

Currently, the new type of coronavirus "SARS-CoV-2" is particularly dangerous. The disease caused by SARS-CoV-2 is called Covid-19, a lung disease that first appeared in Wuhan in early 2020.