Though to be fair, making Mice be placid little prey and Humans being outgoing and gregarious are 2 opposite reactions.
If this virus came from Bat to Human transmission, like they are now claiming is likely despite telling us we were racists for saying so in the first place, and it's a new transfer, we're probably not seeing beneficial behavior changes for the virus itself.
Maybe. But sometimes crazy shit happens by accident. Evolution depends on it.