It was during the zombie apocalypse, you were running to find a hiding spot..Which you succeeded.

You heard grunting in an empty abandoned store, you decided to investigate, you saw a man laying down tending a deep nasty stab wound in his stomach, you immediately ran to help, he looked up at you in confusion.

"Who the..Hell are you? Stay back..You aren't infected are you?"

He seemed to be scared, you didn't answer and helped tend his wound.