1、Lassa fever is endemic to West Africa, the virus kills thousands of people each year.
熱在西非流行，該病毒每年可殺死成千上萬的人。

2、The incubation period of Lassa fever ranges from 6-21 days.
拉沙熱的潛伏期為6 - 21天。

3、Humans usually become infected with Lassa virus from exposure to excreta of infected Mastomys.
人類通常通過暴露于受感染的Mastomys鼠的排泄物感染拉沙病毒。

4、Lassa fever occurs in all age groups and in both men and women.
拉沙熱發(fā)生在所有年齡組的男女中間。

5、Only about 20 percent of people infected with Lassa develop severe symptoms.
僅20%的感染拉沙病毒的人會出現(xiàn)嚴重的癥狀。