Originally Posted by Bcroft
In the first season of the walking dead when they chopped up the one zombie and wiped it on rick and glenn, he mentions not to get it in you eyes or open wounds, but I do agree with your point on how it would get in there mouth when there getting gruesome
Rick's not an expert on the subject, he's just being safe. He's wrong when he says that, because we see zombie blood in everyone's mouth later and in their eyes. Kirkman's dismissal of that being problematic seems to imply that there isn't a disease to transmit through fluids.
Everyone reanimates despite the way they die (save brain trauma), bites infect a wound and kill because of their diseased nature. If fluids were a problem, Kirkman would have covered it and nixed it happening in the show.