From where did coronavirus occur?

In China, the coronovirus epidemic is rampant, several dozen people have died, more than 1,000 are infected with this dangerous disease.
According to the famous popularizer of science David Quammen, author of the book “Contagion,” and other experts, the distributor of coronovirus is animals eaten.

In China, live animals are traditionally sold in markets and most likely this is how the coronovirus came to humans.
Coronovirus – 2019-nCoV virus – a variant of coronavirus, which has not yet been transmitted to people, mutated and transmitted airdrop from person to person.
WHO is sounding the alarm, Russia has canceled the visa-free regime with China.