After it was widely believed to have originated from bats

Ah, the W.H.O employs the top people in the medical field on planet earth.

Refer to the credentials of the authors & signatories on The Great Barrington Declaration,
to compare and contrast, with the staff at W.H.O

No wonder the W.H.O has been spreading the rumor that it was not a Lab Leak.
Apparently, "Old Wives Tales" are Science to the W.H.O

https://www.who.int/emergencies/diseases/novel-coronavirus-2019/origins-of-the-virus

When all else fails... come out with a new excuse...