Lassa fever

Causes, symptoms, risks, treatment, prevention, surveillance information and guidance for health professionals.

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The cause of Lassa fever, how it is spread and where it is found.


Learn about the symptoms of Lassa fever and what to do if you become ill.


Learn what the risks of Lassa fever are and who is most at risk.


Learn how Lassa fever is diagnosed and treated.


Learn how Lassa fever can be prevented.


Learn how Lassa fever is monitored.

For health professionals

Find detailed information on Lassa fever for health professionals.

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