The emergence of COVID-19?

Novel coronavirus is a brand-new virus, which has never appeared before. People lack corresponding immunity to it, so it will cause the virus to wreak havoc.

Therefore, during the epidemic in novel coronavirus, in order to avoid virus infection, we should go out as little as possible and not gather. Don't go near any wild animals, let alone eat them. If you go out, you need to wear a mask to avoid close contact with any patients with respiratory diseases.