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| View Original: | Enterobius vermicularis LifeCycle-gl.gif (435x497) | |||
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| Keywords: Enterobius vermicularis LifeCycle-gl.gif Enterobiasis Enterobius vermicularis Life cycle of Enterobius vermicularis Eggs are deposited on perianal folds Self-infection occurs by transferring infective eggs to the mouth with hands that have scratched the perianal area Person-to-person transmission can also occur through handling of contaminated clothes or bed linens Enterobiasis may also be acquired through surfaces in the environment that are contaminated with pinworm eggs e g curtains carpeting Some small number of eggs may become airborne and inhaled These would be swallowed and follow the same development as ingested eggs Following ingestion of infective eggs the larvae hatch in the small intestine and the adults establish themselves in the colon The time interval from ingestion of infective eggs to oviposition by the adult females is about one month The life span of the adults is about two months Gravid females migrate nocturnally outside the anus and oviposit while crawling on the skin of the perianal area The larvae contained inside the eggs develop the eggs become infective in 4 to 6 hours under optimal conditions Retroinfection or the migration of newly hatched larvae from the anal skin back into the rectum may occur but the frequency with which this happens is unknown Enterobius_vermicularis_LifeCycle gif 2011-03-28 17 14 UTC Enterobius_vermicularis_LifeCycle gif US DPD derivative work Elisardojm <span class signature-talk >talk</span> Translate to galician Elisardojm Enterobius_vermicularis_LifeCycle gif Original upload log This image is a derivative work of the following images File Enterobius_vermicularis_LifeCycle gif licensed with Cc-pd-mark-footer PD-USGov 2006-05-13T18 50 48Z Patho 435x497 21830 Bytes <nowiki> Enterobiasis Enterobius vermicularis Life cycle of Enterobius vermicularis Eggs are deposited on perianal folds Self-infection occurs by transferring infective eggs to the mouth with hands</nowiki> Uploaded with derivativeFX Enterobius v life cycle CDC lifecycles | ||||
