Earlier quoted context omitted.
> In 2015, an international team including two scientists from the institute [Wuhan Institute of Virology] published successful research on whether a bat coronavirus could be made to infect HeLa. The team engineered a hybrid virus, combining a bat coronavirus with a SARS virus that had been adapted to grow in mice and mimic human disease. The hybrid virus was able to infect human cells.[11][12] https://en.wikipedia.o…
One of the sources for that part is: "A SARS-like cluster of circulating bat coronaviruses shows potential for human emergence" [0] The other source is a nature news article [1] which has by now following disclaimer: > Editors’ note, March 2020: We are aware that this story is being used as the basis for unverified theories that the novel coronavirus causing COVID-19 was engineered. There is no evidence that this is…
Unfortunately, SARS-CoV-2 is a very contagious virus, so it's hard to contain. A lot of ink has been spilled about the Wuhan BSL-4 lab, but these viruses were only considered to be a BSL-3 pathogen, and were handled in Baric's lab at UNC in their BSL-3. I would assume that they would also have been handled at the WIV's BSL-3. There had been reports of biocontainment lapses at the WIV, and there have been a number of lab escapes of various pathogens including SARS at other Chinese labs.