Most common parasite causing myocarditis is -

There are 3 stages in the life cycle of trichinella spiralis stage of intestinal invasion Malaise,nausea , vomiting, diarrhoea,abdominal cramps .onset within 2-30 hours of ingestion of food. stage of muscle invasion fever, myalgia, periorbital edema ,hemorrhage in subconjuctiva, myocarditis, and encephalitis. stage of encystation:final stage All symptoms subside Ref: panickers textbook of medical parasitology 8th edition page 173.