Cooties is an imaginary childhood disease, used in the United States and Canada as a rejection term and an infection tag game (such as Humans vs. Zombies). It is similar to the British dreaded lurgi, and to terms used in the Nordic countries, in Italy, Australia, England and in New Zealand. A child is said to "catch" cooties through close contact with an "infected" person or from an opposite-sex child of a similar age.
The word is thought to originate from the Austronesian language family, in which the Philippine languages, Maori and Malaysian word kutu refers to a parasitic biting insect. The earliest recorded uses of the term in English are by British soldiers during the First World War to refer to lice that proliferated in battlefield trenches.
A hand-held game, the Cootie Game, was made by the Irvin-Smith Company of Chicago in 1915; it involved tilting capsules (the cooties) into a trap over a background illustration depicting a battlefield. Other cootie games followed, all involving some form of bug or cootie, until The Game of Cootie was launched in 1948 by Schaper Toys. This game was very successful, becoming an icon; in 2003, the Toy Industry Association included it on its "Century of Toys List" of the 100 most memorable and most creative toys of the 20th century.
In addition to the cooties games, the term cooties was popularised in America in the 1950s by military personnel coming back from service alongside the British in the South Pacific. Like the British dreaded lurgi, the cooties games developed during the early 1950s polio epidemic, and became associated with dirt and contagion.