HEVCOCA¹³⁹¹⁰¹BNC⁵⁴⁶⁰⁶ 基本例句 hepatitis E virus HEV infection is a major cause of morbidity in developing countries and carries an overall case fatality ratio of 1 to3%, according to the report in The New England Journal of Medicine for March1. 根据三月一日的新英格兰医学杂志的一份报告所称，在发展中国家 HEV感染是一种主要的疾病，病死率达1%到3%。 dxy