Gaëtan Dugas

Gaëtan Dugas (French: [ɡaetɑ̃ dyɡa]; February 20, 1953 – March 30, 1984) was a Canadian flight attendant incorrectly identified as "patient zero" during the AIDS epidemic. This narrative, popularized notably by Randy Shilts' 1987 book And the Band Played On, has been refuted through subsequent scientific scrutiny. Genetic analysis later determined that several thousand gay men already had HIV in the United States prior to Dugas' own infection.

Dugas worked as a flight attendant for Air Canada and died in Quebec City in March 1984 as a result of kidney failure caused by AIDS-related infections. In March 1984, a study tracked Dugas, along with other gay and bisexual men, to indicate his role in a particular cluster of 40 AIDS cases in the United States. He was named "Patient O" with "O" standing for "Out-of-California", however And the Band Played On later used the term "Patient 0" standing for "zero" and put significant media focus on Dugas. A 2016 study confirmed that Dugas did not bring HIV to the United States, and he was not Patient Zero, via genetic analysis of stored blood samples, supported by historical detective work.