Nigeria's Lassa fever outbreak has claimed 109 lives this year, up from 99 just one week earlier, according to data cited by The Punch from the Nigeria Centre for Disease Control. The rise is sharp enough to show that the outbreak is still expanding in the states where it has already taken hold, with Bauchi and Ondo emerging as the hardest-hit. The number of deaths is also higher than the figure recorded during the same period in 2025.
Frontline workers are being caught up in the spread. The NCDC said at least 37 health workers had been infected in the first nine weeks of 2026, including six in a single reporting week. That matters because every infection among medical staff makes treatment harder and puts extra pressure on already stretched facilities. It also means the outbreak is not just moving through households and communities but through the system that is meant to contain it.
The agency said at least 18 states had recorded confirmed cases, with 69 local government areas affected. It also reported that 86% of all confirmed cases came from five states: Bauchi, Ondo, Taraba, Benue and Edo. Bauchi accounted for 28% of cases, Ondo 22%, Taraba 19%, Benue 9% and Edo 8%. That concentration suggests the outbreak is not evenly spread across the country, but it is deeply entrenched in several hotspots.
The fatality rate is also worrying. The NCDC said the case fatality rate stood at 23.2% for week nine of 2026, compared with 18.7% for the same period last year. It said the most affected age group was 21 to 30 years and that the male-to-female ratio among confirmed cases was 1 to 0.8. Those numbers indicate that the disease is continuing to affect working-age adults at a pace that puts both households and the health system under strain.
The response from the agency has included a national press briefing, updated infection prevention and control guidance and incident management systems in Kebbi, Kano and Gombe states. It also sent field missions to Bauchi and held data meetings with the highest-burden states. But the NCDC warned that late presentation, poor health-seeking behaviour and weak sanitation remain major obstacles.
Lassa fever is a rodent-borne viral illness that is endemic in Nigeria and several neighbouring countries, so the long-term challenge is not just this outbreak but the conditions that let the virus keep returning. That is why the death toll matters beyond the headline number. Each additional week of spread increases the burden on clinics, slows routine care and makes the country's next containment effort more difficult than the last.
