Trichinosis is a parasitic infection caused by eating raw or undercooked meat that contains larvae of the Trichinella worm. Common sources include pork and wild game. Once ingested, the larvae can grow in the intestines and then migrate to muscle tissues, leading to various symptoms. Symptoms of trichinosis may include abdominal pain, diarrhea, fever, and muscle soreness. In severe cases, it can cause complications affecting the heart and nervous system. Proper cooking of meat to safe temperatures can prevent this infection and ensure food safety.