Who is affected by pinworms

Pinworm is the most common worm infection in the United States.

  • Infections occur in people of all races and socioeconomic backgrounds.1
  • Up to half of people living in institutions have pinworm infections.2

Pinworm infections are most common in preschool and school-age children.2

Pinworm infections in adults are most common among people living in institutions and among parents or caregivers of infected children.2


  1. Dent AE, Kazura JW (2007). Enterobiasis (Enterobius vermicularis). In RM Kliegman et al., eds., Nelson Textbook of Pediatrics, 18th ed., pp. 1500–1501. Philadelphia: Saunders Elsevier.
  2. American Academy of Pediatrics (2006). Pinworm infection (Enterobius vermicularis). In LK Pickering, ed., Red Book: 2006 Report of the Committee on Infectious Disease, 27th ed., pp. 520–522. Elk Grove Village, IL: American Academy of Pediatrics.

Last Updated: September 11, 2008

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