All about coronavirus. Nature and types of viruses, distribution, prevention

Viruses cause different diseases. These are very dangerous ... And what are dangerous - creatures, substances? What is a virus? Is he alive in general? The scientific definition says that the virus is a non -market infectious agent that can only be reproduced inside living cells. Viruses exist wherever there is at least some life. It is believed that they have existed on Earth since the evolution of living cells. And if the influenza virus does not scare us very strongly, then periodically arising new forms of viruses lead to fear of humanity ... bird flu, pork, Ebola fever, human immunodeficiency virus - a lot of we have recently been scared. And now - coronavirus ... Let"s learn about the viruses as much as possible and understand, are they so scary as they are painted