>>8849860 (lb)
>>8849870 (lb)
>https://www.webmd.com/lung/news/20200318/new-coronavirus-wasnt-made-in-a-lab-genomic-study-shows#1
These studies are assuming that the genomic information that they've received out of China is correct.
If it isn't, then the studies are GIGO.
>https://www.newsweek.com/coronavirus-outbreak-september-not-wuhan-1498566
Geneticist Peter Forster, from the U.K.'s University of Cambridge, is leading a research project to understand the historical processes that led to the COVID-19 pandemic. Ultimately, they hope to identify the first person who got the virus and served as the source for the initial outbreak. By analyzing networks, they have so far been able to chart the spread of the virus, including the genetic mutations, as it moved from China to Australia, Europe and the rest of the world.
They have created a network analysis using over 1,000 coronavirus genomes. This includes patient infection date and the "type" of virus the person was infected with. There are three types—A, B and C. A is closest to the coronavirus found in bats and is thought to be the original human virus genome. This type was found in Chinese and American individuals, with mutated versions in patients from Australia and the U.S.
However, A was not the virus type found in most cases in Wuhan, the city in China where COVID-19 was first identified. Instead, most people there had type B. Researchers suggest there was a "founder event" for type B in Wuhan. Type C, the "daughter" of type B, is what was identified in early cases in Europe, as well as South Korea, Singapore and Hong Kong—but appears absent from mainland China.