If you really want to use the word bear. You would have to construct a different sentence. Though uncommon, saying a woman bears a man a child is the correct construct. So you would get something like "because women could not bear them any children". But that is weird cause the problem seems to be on the women's side like this.
Or sire "they could sire no children"
Or just keep it plain modern English and say conceive (I wanted to use simpler terms like get, have or father, but then you might get people saying but what about adoption..)
My neighbour broke into my house! Or that foreign guy from the market. I am not sure which but it was definitely him!!
But seriously I think it is a bit premature to state as fact. You can't state something as fact if they don''t even know what animal. It is still all maybes and perhaps. It is known bats are hosts of many (corona)viruses so not unlikely it was the carrier of this particular coronavirus, but not proven yet, just offered as a likely route. Like how the most shady looking guy with a record might be picked as prime suspect. It is not proof he did it.
Especialy with so many contradictions going around (and I am not talking about members of the public, but by officials) they seem to change their mind (or change what they decide to tell the general public) every few days. (like pets can't get it, objects are totally safe, mask are useless..)