Paragonimus westermani(redirected from Paragonimus ringeri)
the bronchial or lung fluke; a species that causes paragonimiasis, found chiefly in Japan, Korea, Taiwan, China, the Philippines, and Thailand; eggs are coughed up in sputum or swallowed and passed in the feces; miracidia invade Melania snails, and produce large numbers of stumpy-tailed cercariae that leave the snail and crawl into muscles and viscera of crayfish or crabs and encyst; in humans the excysted worms invade the wall of the gut and migrate through the diaphragm into the lungs; the developing parasites cause an intense inflammatory reaction and eventually induce fibrous-walled nodules that usually contain a pair of adult worms, along with exudate, eggs, and remains of red blood cells; the fibroparasitic nodules may become contiguous and form multiloculated cystlike structures; in some instances, the flukes involve the brain, liver, peritoneum, intestine, or skin.
Synonym(s): Paragonimus ringeri
The lung fluke, a common parasite of certain mammals including humans, dogs, cats, pigs, and minks. Human infestation occurs through eating partially cooked crabs or crayfish, the second intermediate host. This infestation is endemic in certain parts of Asia. See: illustrationillustration
See also: Paragonimus
a genus of trematode parasites in the family Paragonimidae. Causes paragonimiasis.
Paragonimus africanus, Paragonimus caliensis, Paragonimus iloktsuenensis, Paragonimus mexicanus, Paragonimus ohirai, Paragonimus peruvianus, Paragonimus uterobilateralis
found in the lungs of a large number of animal species.
found in the lungs of cat, dog and pig. Mink and muskrat are the probable primary hosts.
found in the lungs and other organs of most animal species, and humans.