Lassa Virus is a type of virus that causes a disease known as Lassa fever. It is primarily found in parts of West Africa, where it is transmitted to humans through contact with the urine or droppings of infected multimammate rats. The virus can also spread through direct contact with the bodily fluids of an infected person. Symptoms of Lassa fever can range from mild to severe and may include fever, weakness, and headaches. In some cases, the disease can lead to serious complications, such as bleeding and organ failure. Early diagnosis and treatment are crucial for improving outcomes in infected individuals.