Patient zero of something
Meaning
The phrase refers to the first identified case of a disease or the primary source of an outbreak, and by extension, the initial point of origin for any trend, problem, or phenomenon.
Origin
The dramatic phrase "Patient Zero" soared into public consciousness during the grim early days of the AIDS epidemic in the 1980s. Though the concept of an index case was long established in epidemiology, the term became indelibly linked to a specific narrative: the controversial identification of a Canadian flight attendant, Gaëtan Dugas, in Randy Shilts's 1987 book, "And the Band Played On." While later scientific understanding clarified that Dugas was not the literal first person infected but rather a key early link in a particular cluster, the vivid imagery and compelling storytelling solidified "patient zero" as a powerful, enduring shorthand for the absolute first origin point of any spread, whether of a disease, a trend, or a problem.
Examples
- The epidemiologists tirelessly worked to locate patient zero of the mysterious new virus.
- Many consider the invention of the phonograph to be patient zero of the modern music industry.