Epidemiology
Lassa Fever Outbreak in Nigeria: Rising Case Fatality Rate and Geographic Spread
The Nigeria Centre for Disease Control and Prevention (NCDC) has reported a significant surge in Lassa fever cases and deaths in 2025. As of epidemiological Week 28, Nigeria has recorded 152 deaths from Lassa fever, with a Case Fatality Rate (CFR) of 18.7 per cent, higher than the 17.