This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Cardiovascular system, Subject name: Pathology
Myocaditis can be caused by 
Select and explain. 
A. Schistosomia, B. Ankylostoma duodenale, C. Trichuris trichura, D. Trichinella spiralis
D: Trichinella spiralis
Answer: D: Trichinella spiralis 
Explanation: In the United States, viral infections are the most common cause of myocarditis, with coxsackieviruses A and B and other enteroviruses accounting for a majority of the cases. Cytomegalovirus (CMV), human immunodeficiency virus (HIV), influenza virus, and others are less common pathogens. Toxoplasma gondii (household cats are the most common vector) also can cause myocarditis, paicularly in immunocompromised persons. Trichinosis is the most common helminthic disease with associated cardiac involvement. (Robbins Basic Pathology,9th edition,pg no.401,402)