Because of swine, no wine

At Mass yesterday, the priest announced we would not exchange the sign of peace (which involves hand shaking, for the non-Catholics) and they would not offer the wine (blood). For the creature-of-habit church-goer, this was quite odd, but good I suppose. But see, I am one of wholesome faith who always believed that since the wine is blessed when turned into blood, there are no germs! Wouldn't God protect us from the swine??? Not J, though. He won't touch the wine (blood) would a 10-foot pole even when the whole country is healthy.