Population Wipe (Lumity, GL)

A Deadly Disease crosses into the human world, where the population decreases vastly, leaving only few left. Animals were killed the moment they got infected, so it would be easy to hunt during this outbreak. Those who are immune, are very rare or have not been found yet. Once you have the disease, there's no cure or anything to save you. You only have an hour to live. The way you get the disease? Being bit or scratched, similar to zombies.