definitive sources of evidence ? no statements about furin sites being evidence of a lab leak ? no

But clearly enough for quite a number of people in scientific leadership positions to state publicly that any discussion of a lab leak is a conspiracy theory and to ridicule and censor anyone who thought so.

In fact, these scientific leaders were so good, and so on top of things, that they were able to do the research and examine the evidence, and come up with these strong unequivocal conclusions only a few weeks after covid started to spread worldwide (feb 2020)

https://www.thelancet.com/journals/lancet/article/PIIS0140-6...