It is a nematode roundworm and a common intestinal parasite or helminth, especially in humans. It has the widest distribution of any parasitic helminth, and it is estimated that approximately 200 million people are infected internationally. Particularly prevalent in the pediatric age group, pinworms also infect adults. The medical condition associated with pinworm infestation is known as pinworm infection enterobiasis a type of helminthiasis or less precisely as. Oxiuros enterobius vermicularis oxiuriasis enterobius vermicularis. The pinworm species enterobius vermicularis, also known as threadworm in the united kingdom and australia or seatworm, is a parasitic worm. Infection occurs via selfinoculation transferring eggs to the mouth with hands that have scratched the perianal area or through exposure to eggs in the environment e. The entire lifecycle from egg to adult takes place in the human gastrointestinal tract of a single human host.
Enterobius vermicularis formerly oxyuris vermicularis synonyms. Diagnosis by tape preparation in ova or adult stage. Infestacion por oxiuros enfermedades infecciosas manual msd. Animalia nematoda secernetea rhabditida oxyuridae enterobius vermicularis pinworm has the broadest geographic range of any helminth, and is the most prevalent helminth infection in the usa and western europe. Enterobius vermicularis and dientamoeba fragilis coinfection in four children from ciudad. Shrinivasan, sterling hospital, vadodara, gujarat india ova and larva of enterobius vermicularis.
While an infected person sleeps, female pinworms leave the intestine through the anus and deposit their eggs on the surrounding skin. The entire lifecycle from egg to adult takes place in. The cause of a pinworm infection is the worm enterobius vermicularis. No entanto leach estudando novamente este helminto em 1853. Via person to person contact the worst kind, along with contaminated clothes and linens. Adult males have a blunt posterior end with a single spicule. A pinworm threadworm is a small, thin, white roundworm nematode called enterobius vermicularis that sometimes lives in the colon and rectum of humans. Enterobius vermicularis, biologia, diagnostico, patologia. Pinworm infection spreads through humantohuman transmission, by swallowing infectious pinworm eggs.
Gravid adult female enterobius vermicularis deposit eggs on perianal folds. Male and female pinworms enterobius vermicularis pinworms. Pinworm is a cosmopolitan parasite with particularly high prevalence in countries with a temperate climate. Contributed by centers for disease control and prevention eggs. Pinworm infection, also known as enterobiasis, is a human parasitic disease caused by the. Infestacion por oxiuros enfermedades infecciosas manual merck. Enterobius vermicularis and hymenolepis nana were detected in 4,1 % of examined samples.
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