When spawning into a new run there were zombies in the house next to me. I was immediately bitten ending my run after almost 2 seconds.
The previous run also started in the same house which, after a few days, is where that character died when passing back through it. Upon creating a new character this run started in the same house. My previous character, as a zombie, spawned on the same tile or on a tile next to me (It all happened so fast I couldn't tell).