The Strigoi Rabies Virus

The Rabies Virus is a highly infectious virus that origanlly only infected animals. The infection mutated and spread to humans. It spead across worldwide before it mutated into a vampiric plauge. The new strain devastated and destroyed most of humanity.

History
In early 2020, news of a rabies outbreak emerged from Transylvania. This was caused by rabid bats sold on the black market then fed to dogs. The virus quickly spread worldwide and mostly in England. In November, the virus mutated into a somewhat vampiric state. The British Goverment later formed The Strigoi Rabies Act 2020, which formed very strict rules. When a newly turned evil Vlad took wind, he used the virus to gain a vampire army.

in 2021, a multi-billionaire took over all Armed Forces and became patrion in a hunt for a vaccine. In 2029, The Armed Forces discovered that a british child named Maria Clarke was in fact immune to the virus,