epidemic focus

• 疫原,疫源地

epidemic focus的用法和样例：

例句

1. This study has investigated the region for the epidemic area of tsutsugamushi disease.
   本研究对该地区恙虫病疫源地进行全面研究。
2. Methods The investigation of the epidemic area,the isolation of Orientia tsutsugamushi,the study of pervention measures were carried out.
   方法疫源地流行病学调查，病原分离鉴定与分子生物学研究，预防措施的制定。