Caused by ingestion of Trichinella Spiralis, usually in undercooked pork. See Trichinella Spiralis Muscle, Parasites Trichinosis, and Parasites Trichinella Spiralis programs.Encyclopedia Entry for Trichinosis :Trichinosis. Trichinosis is a disease caused by eating meat that has not been thoroughly cooked and contains cysts (larvae, or immature worms) of Trichinella spiralis. Trichinella spiralis can be found in pork, bear, walrus, fox, rat, horse, and lion. Wild animals, especially carnivores (meat eaters) or omnivores (animals that eat both meat and plants), should be considered possible sources of roundworm disease. Domestic meat animals raised specifically for eating under United States Department of Agriculture (government) guidelines and inspection can be considered safe. For this reason, trichinosis is rare in the United States, but it is a common infection worldwide. When a person eats meat from an infected animal, trichinella cysts break open in the intestine and grow into adult roundworms. The roundworms produce other worms that move through the gut wall and into the bloodstream. The worms invade muscle tissues, including the heart and diaphragm (the breathing muscle under the lungs). They can also infect the lungs and brain. The cysts remain alive for years.Symptoms of trichinosis include: Abdominal discomfort, cramping Diarrhea Facial swelling around the eyes Fever Muscle pain (especially muscle pain with breathing, chewing, or using large muscles) Muscle weakness.Tests to diagnose this condition include: Complete blood count ( CBC ) Eosinophil count (a type of white blood cell) Creatine kinase level (an enzyme found in muscle cells) Muscle biopsy to check for worms in the muscle Blood antibody test.Medicines can be used to treat infections in the intestines, though mild infection does not usually need treatment. Pain medicine can help relieve muscle soreness after the larvae have invaded the muscles.Most people with trichinosis have no symptoms and the infection goes away by itself. More severe infections may be difficult to treat, especially if the lungs, heart, or brain is involved.Possible complications include: Encephalitis (brain infection and inflammation) Heart failure Heart rhythm problems from heart inflammation Pneumonia.Call your health care provider if you have symptoms of trichinosis and you recently ate undercooked or raw meat that might have been contaminated.Pork and meat from wild animals should be cooked until well done (no traces of pink). Freezing pork at subzero temperatures (5 F, or -15 C, or colder) for 3 to 4 weeks will kill the worms. Freezing wild game meat does not always kill the worms. Smoking, salting, and drying meat are also not reliable methods of killing the worms.Parasite infection - trichinosis; Trichiniasis; Trichinellosis; Roundworm - trichinosis.Trichinella spiralis in human muscle Trichinella spiralis in human muscle Digestive system organs Digestive system organs.Diemert DJ. Tissue nematode infections.Encyclopedia Entry for Trichinosis :Trichinosis. Source of disease: Trichinella spiralis