Blood Cures The Dead

In this world, zombies have infected the living by a virus starred in a lab somewhere far away. A group of friends end up at a safe camp for some of the ones left living. They are assigned with bringing, what might be the cure, all the way to a lab somewhere in Europe. They undergo tremendous obstacles to get this cure to the lab to save all of humanity.
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There will be warnings with anything to come up within the story.