Pinworm infections occur in all socioeconomic groups; however, human-to-human spread is favored by close, crowded living conditions. Spread among family members is common. Animals do not harbor pinworms - humans are the only natural host for this parasite. read more
Pinworms are small, thin, pin-shaped worms that sometimes live in the human colon and rectum. They are also called threadworms. They’re about one-quarter to one-half inch long -- about the size of a staple. read more
Pinworms are the cause of a highly contagious intestinal infection in humans. Pinworm infection is most common in children between the ages of 5 and 10, people who live in institutions, and those who have close contact with these groups. Learn about its symptoms, the tape test, and effective methods of treatment. read more