Causes of Lassa Fever

 II. Causes of Lassa Fever
A. Origin and History of the Virus
B. Transmission


A.Origin and History of the Virus

 Lassa fever was first identified in the town of Lassa, Nigeria in 1969. It is now known to be endemic in West Africa, with the majority of cases occurring in Nigeria. The Lassa virus is a member of the arenavirus family and is believed to have been present in West Africa for centuries.

B. Transmission

Lassa fever is primarily transmitted to humans through contact with the urine or feces of infected Mastomys rats, which are common in West Africa. The virus can also be spread through direct contact with an infected person's blood or secretions, as well as through sexual contact, inhalation of contaminated dust, or consumption of contaminated food. In healthcare settings, Lassa fever can also be transmitted through contact with contaminated medical equipment or surfaces.

It is important to note that human-to-human transmission of Lassa fever can occur, particularly in healthcare settings where close contact with infected patients may occur. Adequate personal protective equipment and hygiene measures are crucial in reducing the risk of transmission in these situations.

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