⚠Situational awareness tool — not an operational trigger. Any mobilization requires direct WHO verification and validation through your institutional protocol.

HIGH RISKStable

Lassa fever

📍 Nigeria

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Confirmed cases

1,000

Deaths

237

Case fatality rate

23.7%

Cumulative cases since outbreak start — Nigeria CDC bulletin dated 2026-07-25

Report date : 2026-07-25

Official report date — in isolated zones, field onset typically precedes this by days to weeks.

The exact nature of this date (week of confirmation, transmission period, or bulletin publication date) is not specified by the source.

Region : africa

Nigeria CDC — Lassa fever situation report (2026-07-25): 1,000 confirmed cases and 237 deaths (CFR 23.7%) cumulative in 2026. Source: NCDC weekly sitrep.

Case trend

Focal Point GuidanceIMMEDIATE · IHR NOTIFIABLE

First actions

→Notify WHO National Focal Point within 24 h — IHR Art. 6 obligation
→Activate Incident Management System (IMS) or Emergency Operations Centre
→Dispatch field investigation team — confirm case definition and epicentre
→Brief senior health authority and issue first situation report

Source: Nigeria CDC↗

🔄Last checked by HealthWatch : 26d ago

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Cite this page (Vancouver)

HealthWatch Global. Lassa fever outbreak — Nigeria [Internet]. 2026-07-25 [cited 2026 Aug 20]. Available from: https://healthwatch-global.com/en/outbreak/4dee8751-4a98-43ed-85c5-51b1c74dc5c6. Data source: Nigeria CDC.

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