The first symptoms may appear between 12 hours and two days after ingestion of infected meat. The migration of adult worms in the intestinal epithelium can cause traumatic damage to the host tissue, and the waste products they excrete can provoke an immunological reaction. The resulting inflammation can cause symptoms such as nausea, vomiting, sweating, and diarrhea. Five to seven days after the appearance of these symptoms, facial edema and fever may occur. Ten days following ingestion, intense muscular pain, difficulty breathing, weakening of pulse and blood pressure, heart damage, and various nervous disorders may occur, eventually leading to death due to heart failure, respiratory complications, or kidney malfunction, all due to larval migration. In pigs, infection is usually subclinical, but large worm burdens can be fatal in some cases.
Trichinella spiralis
Trichuris trichiura
Trichinella britovi
Schistosoma mansoni
Schistosoma japonicum
Echinostoma
Onchocerca volvulus
Taenia asiatica