Zero Patience is a 1993 Canadian musical film written and directed by John Greyson. The film examines and refutes the urban legend of the alleged introduction of HIV to North America by a single individual, Gaëtan Dugas. Dugas, better known as Patient Zero, was tagged in the popular imagination with the blame in large measure because of Randy Shilts's history of the early days of the AIDS epidemic, And the Band Played On.