Well they never said season 2 will star the same characters.
My guess is season 2 will be a whole different main character/setting/supporting characters. I'm going with Clementine having to kill Lee near the end.
I really hope that there's a way to save him, though, the bite looks very minor so maybe someone in the next episode finds out you can chop the arm off to save him or something.
"You lack the requisite spine and testicular fortitude to study under me"