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Outbreak Updates
24 December 2025
Nigeria

Lassa fever in Nigeria

As of 14 December 2025, a total of 9,164 suspected Lassa fever cases (1,097 confirmed with 201 deaths) have been reported since the start of 2025. Confirmed cases have been reported in 21 states, with 89% of confirmed cases reported from Ondo, Bauchi, Edo and Taraba. Please see our Topics in Brief article for further details on Lassa fever.

Source: State Lassa fever in brief
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Polio Pregnancy Yellow fever Malaria Vaccine / Vaccination Rabies Dengue Marburg Mpox Nipah virus Oropouche MERS-CoV Pertussis