Definition
Lassa virus is the cause of Lassa fever, a viral hemorrhagic fever endemic to West Africa. It's transmitted to humans primarily through contact with the urine or feces of infected multimammate rats (Mastomys natalensis). Lassa fever can cause a range of symptoms, from mild fever to severe bleeding and organ failure. Think of it as a hidden danger in rural areas of West Africa. Public health efforts focus on rodent control and early diagnosis to mitigate its impact. It's a significant health concern for affected communities.