This has always been a big question to me in TWD universe. Every single time someone gets bitten, they never wait until the person turns to kill them, always right before when they're really weak and showing symptoms but not a full on walker yet, like in lee and ducks case ( and that other guy in the comics who was bitten/amputated but they killed him when they thought he was turning)
So what if that's the grand irony of TWD? getting bitten doesn't actually make you turn, just deathly sick but it survivable, and people have just been acting too soon?
that actually would be a nice twist if you asked me