By Wikipedia (and by all the doctors in the media) the COVID-19 virus is spread:

The virus is primarily spread between people during close contact, most often via small droplets produced by coughing, sneezing, and talking. The droplets usually fall to the ground or onto surfaces rather than traveling through air over long distances. Less commonly, people may become infected by touching a contaminated surface and then touching their face. It is most contagious during the first three days after the onset of symptoms, although spread is possible before symptoms appear, and from people who do not show symptoms.

https://en.wikipedia.org/wiki/COVID-19_pandemic

The source of COVID-19 is by speculation from a bat or by laboratory or some of kind mixture of both: created in laboratory which caught by bat which led to human.

It was speculated from bat found in caves near Wuhan:

corona bat

In 2004, deep in the wilderness of China’s Yunnan province, a group of scientists from the Wuhan Institute of Virology discovered a cave full of wild bats carrying hundreds of SARS-related viruses.

https://www.news.com.au/lifestyle/health/health-problems/mysterious-bat-cave-in-chinese-wilderness-could-hold-key-to-coronavirus/news-story/530063aeb9de7020e626f1c4839b9777

The more chances that it was from a bat from these caves. But china is not stopping people from eating bats and the (wet) markets are full with them:

The video comes after photos appeared of a Chinese market at the center of the deadly corona virus outbreak selling live animals – including wolf pups, foxes, rats and peacocks – to eat, according to a new report.

The wild animals were among 112 items that were peddled at the Hunan seafood market in the central city of Wuhan, Agency France-Press reported.

https://www.news.com.au/travel/travel-updates/warnings/chinese-market-at-centre-of-coronavirus-outbreak-sells-wolves-rats-and-bats-to-eat/news-story/40565ee222aa22612762a9f89111c0fb

If the virus came from a bat and people are selling it despite the virus than there is no reason the virus will not come back again.

If it came from a lab-rotary than there is no reason why the virus will come back stronger in the winter like the flu is caused.

If it came from the mixture of both than other bats caught the virus and we are back to the first reason.

The UN should put sanctions on china for eating wild & weird animals.