This is not a new disease. Coronaviruses have always existed
Coronaviruses have indeed been around for a long time. But just like animals and plants, viruses are evolving, recalls the Süddeutsche Zeitung. The currently known four strains of coronaviruses include 46 known virus species, as well as many subspecies that affect both mammals, birds and fish. Coronaviruses change rapidly, some of them infecting humans and causing severe and varied symptoms.
Before the SARS epidemic in 2002/03... Читать дальше...