Zombie apocalypse

The zombie apocalypse has begun...
The first 5 weeks weren't too difficult, but then... supplies started running low, and there were very few people left. You and Sasha (your friend) decided to go out and scavenge for supplies to find something to eat and drink. But then you saw the news that a vaccine exists and needs to be found, so now you weren't just looking for supplies.

"Let's find the vaccine," you asked Sasha.

"Are you crazy? What if we turn?" he said.

"We have to go for supplies anyway," you replied.

You decided to go after all, to find both the supplies and the vaccine.