"In other words COVID-19 could have been created from that recombination event in an animal host or it could have occurred in a cell-culture experiment."
In January, Petrovsky began modeling the virus to try and create a vaccine candidate. According to the report, he then began to explore "what animal species might have been involved in the transmission to humans" in order to better understand the origins of the virus, when he discovered how well it infects humans over other species.
"We found that the COVID-19 virus was particularly well-adapted to bind to human cells and that was far superior to its ability to bind to the cells of any other animal species which is quite unusual because typically when a virus is well-adapted to an animal and then it by chance crosses to a human, typically, you would expect it to have lower-binding to human cells than to the original host animal. We found the opposite so that was a big surprise," he said.
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