The Walking Dead season 5, episode 2 saw Bob in extreme danger after getting captured by Gareth and the remnants of Terminus.
Bob appeared to get bitten by a walker before later getting captured by Gareth’s group.
As the spoilers indicated before the episode, the bite wasn’t confirmed but he seemed odd, such as seeming to say goodbye to Sasha before going outside to cry.
In the comic books, Rick’s group is accosted by a group of cannibals and one member--Dale--is captured. The cannibals begin eating Dale, not realizing that he was bitten by a zombie, thus they were eating “tainted meat.”
The theory was that since Dale was bitten, the flesh already had components of the virus in it, so the cannibals would then turn into walkers.
Comic creator Robert Kirkman said at a forum, though, that it’s not known if the “tainted meat” had any effect on The Hunters because of the short interval between the consumption of the meat and their deaths, and when their bodies are burnt (Rick’s group kills all of the cannibals).
UPDATE: Bob was captured and Gareth’s group started to eat him. See a video preview for episode 3 here.
