Tapeworms (Cysticercosis)

I see this as a disease that can be treated and prevented. But there are precious few resources available for treatment and little recognition of the problem - Theodore Nash MD

Tapeworms (Cysticercosis)
Tapeworms (Cysticercosis)

image by: World Health Organization (WHO)

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Hidden Epidemic: Tapeworms Living Inside People's Brains

A blob in the brain is not the image most people have when someone mentions tapeworms. These parasitic worms are best known in their adult stage, when they live in people’s intestines and their ribbon-shaped bodies can grow as long as 21 feet. But that’s just one stage in the animal’s life cycle. Before they become adults, tapeworms spend time as larvae in large cysts. And those cysts can end up in people’s brains, causing a disease known as neurocysticercosis.

“Nobody knows exactly how many people there are with it in the United States,” says Nash, who is the chief of the Gastrointestinal Parasites Section at NIH. His best estimate is 1,500 to 2,000. Worldwide, the…

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Resources

 Hidden Epidemic: Tapeworms Living Inside People's Brains

Parasitic worms leave millions of victims paralyzed, epileptic, or worse. So why isn’t anyone mobilizing to eradicate them?

CDC

People do not get cysticercosis by eating undercooked pork. Eating undercooked pork can result in intestinal tapeworm if the pork contains larval cysts. Pigs become infected by eating tapeworm eggs in the feces of a human infected with a tapeworm.

Merck Manual

Taenia solium is an intestinal infection with adult tapeworms that follows ingestion of contaminated pork. Cysticercosis is infection with larvae of T. solium, which develops after ingestion of ova excreted in human feces. Adult worms may cause mild GI symptoms or passage of a motile segment in the stool. Cysticercosis is usually asymptomatic unless larvae invade the CNS, resulting in neurocysticercosis, which can cause seizures and various other neurologic signs.

WHO

Taeniasis is an intestinal infection caused by 2 species of tapeworms. The most significant infections are caused by Taenia solium (pork tapeworm) and Taenia saginata (beef tapeworm). Humans can become infected with T. saginata when they consume beef which has not been adequately cooked, but Taeniasis due to T. saginata has no major impact on human health. Infection with T. solium can occur if humans consume contaminated water or food such as raw, undercooked or infected pork, and as a result of poor hygiene. This infection can result in devastating effects on human health.

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