Obviously we don't know for sure but that lab being right there makes more sense to me than anything else. I also doubt it was intentional but commies are morons and this is like a Chinese Chernobyl. Side note:. I think the theory about the bat was that someone humped one, not ate it. Way back in the other thread there was a picture of a bat confined spread eagle in netting, in some sort of weird ritual. There are some sick people in this world.