Infantile myocarditis and pericarditis is due to –: (A) Coxsackie A, (B) Coxsackie B, (C) Mumps, (D) Pox virus
Answer is B. The commonest cause of myocarditis is coxsackie B infection, which occurs any where from the age of a few hours to 7 weeks, with a peak around two weeks.