Se encuentra presente extendido a lo largo del mundo. Es especialmente abundante en aquellos sitios en los que las carnes de cerdo y vaca son consumidas con frecuencia. Esto quiere decir que no tiene la capacidad de sintetizar sus propios nutrientes, por lo que debe alimentarse de las sustancias elaboradas por otros seres vivos. Absorbe principalmente carbohidratos.

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Taeniasis is an intestinal infestation of adult tapeworms. It is acquired by humans through the ingestion of tapeworm larval cysts cysticerci in raw or undercooked pork.

One tapeworm carrier can excrete tens of thousands of eggs per day and has therefore a special importance in the epidemiology of the parasite. Cysticercosis develops when humans or pigs ingest the excreted tapeworm eggs. This happens most likely as a result of poor hygiene, through contaminated food or water and when pigs have access to human faeces.

Ingested eggs develop to larvae called cysticerci and migrate through the body. Characterizing the transmitting host, data about pigs and pig keeping can serve as a proxy for human infection. In humans, the cysticerci have an affinity to migrate to the central nervous system where they can cause neurological symptoms, including epileptic seizures.

This specific form of cysticercosis is called neurocysticercosis and has a specific importance as a potential severe and long-lasting disease. Due to the frequently asymptomatic nature of taeniasis, most tapeworm carriers remain unidentified or are only diagnosed incidentally or in the frame of targeted surveys. For a definitive diagnosis of neurocysticercosis, sophisticated neuro-imaging techniques like CT or MRI scanners are required, which are not available in many locations where the tapeworm infection is frequent.

These circumstances lead to taeniasis and cysticercosis being under-reported and mis- and under-diagnosed, and thus data on human cases and occurrence in animal populations is limited. Currently, these data are more likely to indicate the presence of the disease rather than its full extent. As control programmes scale up towards control of Taenia solium, surveillance is expected to increase, leading to subsequent improved data quality.


Taenia Solium (Pork Tapeworm) Infection and Cysticercosis

Taenia solium can also cause cysticercosis. Life Cycle Taeniasis is the infection of humans with the adult tapeworm of Taenia saginata, T. Humans are the only definitive hosts for these three species. Eggs or gravid proglottids are passed with feces ; the eggs can survive for days to months in the environment. Cattle T. A cysticercus can survive for several years in the animal. Humans become infected by ingesting raw or undercooked infected meat.

FM 90-29 PDF

Parasites - Taeniasis

Humans are the only known definitive hosts for the T. Human infection begins with the ingestion of infected raw or undercooked pork. The T. There it will mature and increase its number of proglottids. Terminal gravid proglottids will break off from the main body and will either pass out with the stool or worm its way out of the anus.

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