The Omega Man

The Omega Man is a 1971 American science fiction film directed by Boris Sagal and starring Charlton Heston. It was written by John William Corrington and Joyce Corrington, based on the 1954 novel I Am Legend by the American writer Richard Matheson. The films producer, Walter Seltzer, went on to work with Heston again in the dystopian science fiction film Soylent Green in 1973.

In 1975, biological warfare between China and Russia kills most of the worlds population. U.S. Army Col. Robert Neville, M.D. is a scientist based in Los Angeles. As he begins to succumb to the plague himself, he injects himself with an experimental vaccine, rendering himself immune.By 1977, Neville believes he is the plagues only immune survivor. Struggling to maintain his sanity, he spends his days patrolling the deserted city of Los Angeles, hunting and killing members of The Family, a cult of plague victims who were turned into nocturnal albino mutants. The Family seeks to destroy all technology and kill Neville, who has become a symbol of the science they blame for humanitys downfall. At night, living atop a fortified apartment building equipped with an arsenal of weaponry, Neville is a prisoner in his own home. ........

Source: Wikipedia