See the netflix Documentary "Understanding the corona virus"
there are thousands of man made viruses ,we make them to get a head start in case a virus in the wild happens.
The Covid19 virusis 96% sars dna. the 19 means the year it was made or found.
The Wuhan Lab had the virus, along with many others viruses. They study it and try to develop cures for it.
some how it got out.
Dr Li was the first person to alert other doctors about it. he thought it was sars. He saw 6 ppl with it.
The Chinese gov arrested him and made him sign an affidavit that he was a "Liar" and a "fear-monger". a week or 2 later he died from covid19.
The docu stated if the Chinese government had listened to him and took the right steps that 95% of the cases would have never happened and the germ was unlikely to have left China.