Lassa fever is a severe, often fatal, hemorrhagic fever that occurs in rural areas of West Africa, and is caused by a virus transmitted from infected rodents to man.

• '''拉沙热'''拉沙热是一种严重的,往往致命的出血热,多发生在非洲西部的乡村地区,是由被感染的啮齿类动物将病毒传染给人引起的。