28 Days Later...

A highly contagious, rage-inducing virus is unleashed in Great Britain after a group of animal liberation activists attempt to free chimpanzees infected with the virus in Cambridge, spreading quickly among the populace and resulting in societal collapse. 28 days after the initial outbreak, bicycle courier Jim awakens from a coma in St Thomas' Hospital in London, where he discovers the city deserted. Wandering through London and finding signs of catastrophe, he is eventually attacked by humans infected by the virus, but rescued by survivors Selena and Mark. The two inform Jim about the virus, which is believed to have spread worldwide. At Jim's request, the group travels to his parents' house in Deptford, where he learns they committed suicide. That night, Mark is bitten during an infected attack and Selena kills him before he turns.