WHAT IS LASSA FEVER
Lassa fever is a viral hemorrhagic illness caused by the Lassa virus, primarily found in West Africa. Named after the town in Nigeria where it was first identified in 1969, Lassa fever is transmitted to humans primarily through contact with infected rodents, particularly the multimammate rat. The virus can spread to humans through contact with food or household items contaminated with rodent urine or droppings.
Lassa fever is primarily found in West Africa, particularly in countries such as Nigeria, Sierra Leone, Liberia, and Guinea. The disease is endemic in these regions, with sporadic outbreaks occurring mostly during the dry season when people come into closer contact with rodents due to factors like food scarcity and storage practices.
The virus is transmitted to humans through contact with infected rodents or their urine and feces, as well as through direct contact with bodily fluids of infected individuals. Healthcare workers are at increased risk of infection due to exposure while caring for infected patients.
Lassa fever cases range from mild illness to severe and potentially fatal hemorrhagic fever. The disease can spread rapidly in healthcare settings, especially if infection control practices are inadequate.The illness ranges from mild symptoms to severe hemorrhagic fever, and symptoms may include fever, headaches, sore throat, muscle aches, chest pain, vomiting, diarrhea, and bleeding. In severe cases, it can lead to multi-organ failure and death.
Lassa fever poses a significant public health concern in affected regions due to its potential for outbreaks and its ability to cause severe illness. Prevention measures focus on avoiding contact with rodents, practicing good hygiene, and implementing infection control measures in healthcare settings. Early diagnosis and prompt treatment are essential for improving outcomes in patients with Lassa fever.
Lassa fever is an acute viral illness caused by the Lassa virus, primarily found in West Africa. It is transmitted to humans through contact with food or household items contaminated with urine or feces of infected multimammate rats. The virus can also spread between humans through direct contact with bodily fluids of infected individuals.
The infectious agent responsible for Lassa fever is the Lassa virus, which belongs to the Arenaviridae family. This virus is an RNA virus, specifically an enveloped, single-stranded RNA virus, and it is the causative agent of Lassa fever in humans. The Lassa virus primarily resides in rodents, particularly the multimammate rat (Mastomys natalensis), which serves as the natural reservoir for the virus. Transmission to humans occurs through contact with the urine or feces of infected rodents, or through direct contact with bodily fluids of infected individuals