Dog urinating and defecating on your site while owners watch

Pinworm (Enterobius vermicularis) infections are the most common worm infection in America. Although any individual may develop a case of pinworms, the infection occurs most frequently in school children between 5 to 10 years of age. 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.