[boatbums]

That could be true, but somehow I remember "three month coma" for some reason. Anyhow, even ONE month with no one to change the dressing, IV bags, antibiotics, etc., would not have a guy coming to and able to walk out on his own, riding a bike, etc. I know Morgan looked after him for some time until he was fully healed and started out looking for Lori and Carl. It's weird that such a disease could spread world-wide so quickly that nowhere is free from it. Maybe some Caribbean islands??? When the CDC doc tells Rick "everyone has the virus" and don't need to get bitten to reanimate, there is never any explanation for how or why it started in the first place.

There's going to be a season five, I read, so do you think the cause may eventually be revealed? Maybe some government bio-warfare plan gone amok???

[ConjunctionJunction]

I think that the zombie apocalypse came towards the very end of his hospital stay, so he was probably without medical attention for just a few days. Perhaps 3 days? Even if he had an IV, he would start getting dehydrated. That’s just a guess - I don’t think they got that specific on the timing.

[Secret Agent Man]

don’t think they will explain it. any attempt will leave gaping holes because it’s a flawed premise and any explanation would have to jive with 4 years of precedence in episode footage.

[TheThirdRuffian]

He was taken care of by nurses doctors, etc, until a day or so before he woke up.

Remember, there was still fresh water in the flowers he drank.