Nigeria has recorded 11 new confirmed cases of Lassa fever, bringing the total number of infections in 2025 to 822, with the death toll rising to 155, according to the latest data released by the Nigeria Centre for Disease Control and Prevention (NCDC).
The figures cover Epidemiological Week 29 (July 14 to July 20, 2025), as captured in a report published by the NCDC on Tuesday.
The agency reported a Case Fatality Rate (CFR) of 18.9 percent, up from the 17.1 percent recorded in the same period last year.
“Cumulatively as at Week 29, 2025, 155 deaths have been reported with a Case Fatality Rate of 18.9 per cent,” the report stated.
“In total for 2025, 21 states have recorded at least one confirmed case across 105 LGAs.”
So far, 6,640 suspected cases have been documented across the country, with confirmed infections reported in 21 states and 105 local government areas.
During the reporting period, Ondo and Edo States accounted for the latest confirmed cases.
The number of new infections in Week 29 remained the same as in Week 28, signaling a pause in the rising trend.
The NCDC also revealed that five states continue to bear the brunt of the outbreak, accounting for approximately 89 percent of all confirmed cases:
Ondo State: 32%
Bauchi State: 23%
Edo State: 17%
Taraba State: 14%
Ebonyi State: 3%
The remaining 11 percent of cases were distributed across 16 other states.
In terms of demographics, the most affected age group remains individuals aged 21 to 30 years, with the full age range of cases spanning from 1 to 96 years.
The median age is 30 years, and the gender breakdown shows a male-to-female ratio of 1:0.8, indicating a slightly higher infection rate among men.
“The number of suspected and confirmed cases decreased compared to that reported for the same period in 2024,” the NCDC noted.
“No new healthcare worker was affected in the reporting week 29,” the report added.
