Latter, a few kid suffer from heart myositis more, among them the commonnest is myositis of virus sex heart, other still has bacterial sex (diphtheria) fungus and protozoon.

• 近来，一些青年人患心肌炎较多，其中最常见的是病毒性心肌炎，其它还有细菌性(白喉等)真菌和原虫等。