Apparently if you wake up and find a bat in your room, you pretty much have to assume you’ve been bitten and should get the shots even if you can’t find a bite. They have surgical-instrument sharp teeth and you might not even know you’ve been bitten. Rabies is horrific and once you show symptoms there is no cure. Only one or two people have ever survived symptomatic Rabies...ever.
I have been bitten by a bat. I do not see how any person could sleep through that! It hurts like hell.