bite infections

Now that seemingly the flu outbreak storyline has been wrapped up on The Walking Dead (unsurprisingly, but disappointingly, with their ineffective treatments proving to be miracle cures), there's still one more zombie microbiology topic I'd like to cover: what's up with the bite, and is it the cause of death? I said previously: "We know the pathogen can certainly be spread by bites and then cause zombification that way..." but one commenter disagreed, noting: "I don’t think we have evidence for that from the show. I think it clearer that zombie bites cause death, and there doesn’t seem to be…