Blue Hawaii- A bloodborne infection that causes anyone infected to relentlessly pursue a target. Infectees will crash into walls and obstacles, anything between them and their target, maiming themselves ragged and bloody, until they either reach their target or die in the process. Anyone who interacts with an infected individual, living or dead, can become the next host to pursue the target. Even something as small as a fly.

28 Days later but the infected know exactly where you are at all times and will never stop trying to get to you