Which time?
Lab leaks are pretty common, all three of those have leaked from labs (smallpox 5 times): https://en.wikipedia.org/wiki/List_of_laboratory_biosecurity...
And keep in mind these are just the leaks we know about.
I mean the original appearance, thousands of years ago, when it definitely was not a lab leak. The point is that our worst viruses have come from nature, likely zoonotic sources.
I mean the original appearance, thousands of years ago, when it definitely was not a lab leak. The point is that our worst viruses have come from nature, likely zoonotic sources.