Anisachiasis . Disease of the gastrointestinal tract characterized by intestinal colic, fever , caused by ingestion of raw fish containing larvae of nematodes of the Anisakidae family.
Symptoms
The larvae are released in the stomach and can lodge in the walls of the stomach , producing acute ulceration with nausea , vomiting and epigastric pain. Once the larvae are in the intestine, the symptoms it causes can be mistaken for appendicitis. It is possible that on occasion they perforate the peritoneal cavity and in rare cases affect the large intestine.
The diagnosis is confirmed by the identification of larvae invading the oropharyngeal cavity, the location of larvae by radiographic examination.
Infectious agent
Larval nematodes of the family Anisakidae, including the genera Anisakis, Phocanema, and Newfoundland.
Reservoir
Although the Anisakidae are widely distributed in nature, only parasites of marine mammals constitute a significant threat to man.
Transmission Mode
The infecting larvae live in the organs of the fish and when it dies they pass to the somatic muscles, that is, to the meat of the same. When man ingests them, in the process of digestion they are released and penetrate the gastric or intestinal mucosa.
Prevention measures
Avoid eating raw or undercooked fish. Heating above 60 degrees Celsius destroys the larvae. On the other hand, freezing at -20 degrees Celsius can also destroy the larvae.