Lassa mammarenavirus is an arenavirus that causes Lassa hemorrhagic fever, a type of viral hemorrhagic fever, in humans and other primates. Lassa mammarenavirus is an emerging virus and a select agent, requiring Biosafety Level 4-equivalent containment.

What does Lassa virus do?

Lassa fever is an acute, viral disease carried by a type of rat that is common in West Africa. It can be life-threatening. It is a hemorrhagic virus, which means it can cause bleeding, although 8 out of every 10 people with the virus have no symptoms. If it affects the liver, kidneys, or spleen, it can be fatal.

Can Lassa fever be cured?

What is the treatment for Lassa fever? Ribavirin given intravenously and early in the course of illness is an effective treatment, in addition to support of fluid and electrolytes, oxygenation, and blood pressure.