Trichinosis (Trichinellosis)

Parasitic Diseases, Nematodes (Roundworms)

Animals Involved

Main reservoir may be wild carnivores (foxes, badgers, wolves, lynx), omnivores (bears, boars); also in any mammal that eats (or is fed) meat, including domestic swine, rodents, cats, dogs, horses, marine mammals; also birds (T pseudospiralis); T zimbabwensis (zoonotic potential unknown) can infect reptiles

Known Distributions

Worldwide, especially in temperate regions; some species are limited in their distribution

Probable Means of Spreading

Ingestion of undercooked pork, horse meat, game, and other tissues containing viable cysts

Clinical Manifestations in People

Gastroenteritis in some; followed by fever, headache, severe myalgia, facial swelling (especially eyelids); ocular pain, rashes, or pruritus possible; pneumonitis, CNS, or myocardial involvement can occur; inapparent to fatal

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