What is the prevalence of pinworm infection (enterobiasis)?

Updated: Jul 17, 2019
  • Author: Sun Huh, MD, PhD; Chief Editor: Michael Stuart Bronze, MD  more...
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E vermicularis is the most common helminthic infestation in the United States. General prevalence in children is reported to be 0.2-20%. Pinworm infection is most common in persons who live in crowded living conditions and in individuals who are institutionalized. Prevalence in institutionalized persons is reported to be 50-100%. A similar prevalence of pinworm infestation has been reported in European countries. [3]

The general prevalence of pinworm infection in some regions may be as high as 12%. Pinworm infection is most common in cosmopolitan areas in cool and temperate regions. Egg carrier rates vary by country, from 0.1-98.4%.

Of all age groups, school-aged children are most at risk for pinworm infections. In adults, pinworm infection is most common in parents aged 30-39 years, typically because of transmission from their children aged 5-9 years.

Overall, males are affected twice as often as females, except in people aged 5-14 years, when infection is predominantly in females.

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