I Am Legend

Robert Neville is the apparent sole survivor of a pandemic whose symptoms resemble vampirism. It is implied that the pandemic was caused by a war, and that it was spread by dust storms in the cities and an explosion in the mosquito population. The narrative details Neville's daily life in Los Angeles as he attempts to comprehend, research, and possibly cure the disease, to which he is immune. Neville's past is revealed through flashbacks: The disease claimed his wife and daughter, and he was forced to kill his wife after she became a vampire and attacked him.
Neville survives by barricading himself by sunset inside his house, further protected by garlic, mirrors, and crucifixes. Swarms of vampires, led by Neville's neighbor, Ben Cortman, regularly surround his house, trying to find ways to get inside. During the day, he scavenges for supplies and searches out the inactive vampires, driving stakes into their hearts to kill them. He finds brief solace in a stray dog that finds its way to his house, but the sickly, malnourished dog dies a week later.
After bouts of depression and alcoholism, Neville decides to find out the scientific cause of the pandemic. He obtains books and other research materials from a library, and through painstaking research discovers the root of the disease in a strain of bacteria capable of infecting both deceased and living hosts. He also discovers that the vampires are affected by the garlic, mirrors, and crosses because of "hysterical blindness", the result of previous psychological conditioning of the infected. Driven insane by the disease, the infected now react as they believe they should when confronted with these items. Even then, their reaction is constrained to the beliefs of the particular person; for example, a Christian vampire would fear the cross, but a Jewish vampire would not.
Neville also discovers more efficient means of killing the vampires, other than just driving a stake into their hearts. This includes exposing them