Taenia catenifera, Taenia obese, Echinococcus granulosus, Microhymenocarpis tapeworm

The body of the insect is flat and long, and the body is segmented (one set of male and female reproductive organs in each segment)

Most hermaphrodites

No mouth or digestive tract, relies entirely on body surface to absorb nutrients

No body cavity, body wall consists of cortex and subcutaneous layer

Suction cup at the head end

Round, outer layer (egg shell embryonic membrane)

Inside the egg is a mature larvae (hexapodia) with three pairs of small hooks

pseudophyllales

Roundeyes

Milky white, flat and long like a belt

whole

incomplete

White translucent oval cyst-like body filled with transparent cyst fluid

The scolex contains the mesenchymal layer that is inwardly turned and contracted.

Parasitizes the upper small intestine of humans (definitive host), and the eggs or gestational segments are excreted in the feces

Ingested by pigs and wild boars (intermediate hosts), hexapodia are hatched

Humans accidentally eat eggs or gestational worms (humans can also serve as intermediate hosts) and develop into cysticerci in the human body, but cannot continue to develop into adult worms → Cysticercosis

Cysticerci develop in pigs (rice pork/bean pork) and parasitize muscles, brain, eyes

When a person eats pork containing cysticerci, the worms develop into adult worms in the human small intestine and begin to excrete cysticerci and eggs → Taenia solium Taeniasis

Gastrointestinal symptoms, Paiji tablets

oppression, space occupation, chemical stimulation

History of Pai Jie Slices, History of Eating Raw Pork

Stool test

Biopsy: subcutaneous masses and nodules

fundus

imaging, immunity

Betel nut-pumpkin seed method, praziquantel, mebendazole

Cysticercosis surgical removal of cysts

Slightly square, without apex

Parasitizes in the upper small intestine of the human (definitive host) body, and is excreted during pregnancy and eggs

Ingested by cows (intermediate host), hexapodia hatch out

It circulates everywhere in the cow's body with the blood (mostly in the muscles) and develops into bovine cysticerci.

Humans eat raw beef containing bovine cysticerci, which adhere to the intestinal wall and develop into adult worms.

Slender, milky white

Round or oval, colorless and transparent, with 4 to 8 filaments bulging out from both ends of the embryonic membrane

Hexapodia

Eggs → fleas (hexate larvae hatch out) → cysticerci → definitive host (human or mouse) → adult worms

adult

eggs

Hexapodia

Cysticerci

Indistinguishable from Taenia tapeworm eggs

Echinococcus sand

It parasitizes the upper part of the small intestine of carnivores (definitive hosts) such as dogs and wolves, and the gestational segments and eggs are excreted in the feces.

Swallowed by cattle, sheep, camels and other artiodactyls, and occasionally humans, horses, kangaroos, and primates (intermediate hosts), hexapodia hatch out

It burrows into the intestinal wall, circulates through the blood to the liver, lungs and other organs, develops into Echinococcus, and can spread in the intermediate host.

Swallowed by final hosts such as dogs and wolves, they develop into adult worms

Liver - pain in liver area

Lungs—shortness of breath, chest pain

body surface mass

mechanism

Performance

mechanism