LIFE CYCLE OF ENTEROBIUS VERMICULARIS PDF

Pinworm infections are typically called enterobiasis, but are also sometimes known as oxyuriasis or threadworm. Among high risk groups — children under age 18, institutionalized people, and those who take care of infected people — the prevalence of pinworm infection can reach 50 percent. How Do You Get Pinworms? Enterobiasis is contagious, and the infection can be passed between people. Adult female pinworms deposit thousands of eggs on the perianal skin the area around the anus.

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Pinworm infections are typically called enterobiasis, but are also sometimes known as oxyuriasis or threadworm. Among high risk groups — children under age 18, institutionalized people, and those who take care of infected people — the prevalence of pinworm infection can reach 50 percent. How Do You Get Pinworms? Enterobiasis is contagious, and the infection can be passed between people.

Adult female pinworms deposit thousands of eggs on the perianal skin the area around the anus. You may directly expose yourself to these eggs by scratching the contaminated area and then putting your fingers in your mouth.

The eggs can also become scattered into the air and inhaled. Adult pinworms then travel to the large intestine colon to mate.

At night — typically when their human hosts are asleep — pregnant female pinworms leave the anus to deposit their eggs in the perianal area. The larvae inside these eggs can become infective in as little as 4 to 6 hours, the CDC notes. Pinworms Treatment Pinworms are treated with one of several antiparasitic medications, which are taken in two doses spread 2 weeks apart the second dose kills eggs that may have hatched since the first dose. Good hygiene and proper care can help prevent the spread of pinworms and reinfection.

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Enterobius Vermicularis - Pinworm

Pinworms are easily transmitted from human to human and are particularly common in children. Luckily the disease, enterobiasis, causes only anal itching. Enterobius vermicularis does not need an intermediate host to complete its life cycle. Humans get infected by accidentally swallowing or inhaling microscopic pinworm eggs.

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Another putative pinworm species, Enterobius gregorii, has been described and reported from humans in Europe, Africa, and Asia. However, further morphologic and molecular evidence suggests E. The rat pinworm, Syphacia obvelata, has also very rarely been reported infecting humans. Infection occurs via self-inoculation transferring eggs to the mouth with hands that have scratched the perianal area or through exposure to eggs in the environment e.

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Pinworm infection

Another putative pinworm species, Enterobius gregorii, has been described and reported from humans in Europe, Africa, and Asia. However, further morphologic and molecular evidence suggests E. The rat pinworm, Syphacia obvelata, has also very rarely been reported infecting humans. Infection occurs via self-inoculation transferring eggs to the mouth with hands that have scratched the perianal area or through exposure to eggs in the environment e. Following ingestion of infective eggs, the larvae hatch in the small intestine and the adults establish themselves in the colon, usually in the cecum. The time interval from ingestion of infective eggs to oviposition by the adult females is about one month.

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What Are Pinworms?

Warnings and Precautions: Risk of convulsions: Convulsions in infants below the age of 1 year have been reported Hematologic effects: Neutropenia and agranulocytosis have been reported in patients receiving mebendazole at higher doses and for prolonged duration. Use in Specific Populations: Pregnancy: Mebendazole use in pregnant women has not reported a clear association between mebendazole and a potential risk of major birth defects or miscarriages. However, there are risks to the mother and fetus associated with untreated helminthic infection during pregnancy. Lactation: Limited data from case reports demonstrate that a small amount of mebendazole is present in human milk following oral administration.

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