Pinworm
Fact Sheet PDF
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Pinworm is an infection caused by a small, white
intestinal worm called Enterobius vermicularis. Pinworm is the most common worm infection in the United
States.
Preschoolers and school-age children have the highest
rates of infection, and infection often occurs in more than one family
member.
Child care centers and other institutional settings
often have cases of pinworm infection.
Pinworm only affects humans; animals do not become
infected with pinworm.
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