The rapid accumulation of mutations in the SARS-CoV-2 Omicron variant that enabled its outbreak raises questions as to whether its proximal origin occ…
www.sciencedirect.com
Id read something of this and Dr Campbell has done a video too.
A paper suggesting that Omicron was from Mice. Covid jumped to mice early on, then mouse to mouse transmission where the mutations occured against the mice immune system then jumped back to humans.
Pure fluke that these mutations against the mice immune system actually changed the virus to attack human bruncus and not Lung.