Nigeria has recorded 152 deaths from Lassa fever so far in 2025, according to the Nigeria Centre for Disease Control and Prevention (NCDC).

In its latest situation report released on Monday, the agency revealed that the Case Fatality Rate (CFR) has risen to 18.7 percent, higher than the 17.3 percent recorded during the same period in 2024.

As of epidemiological Week 28, a total of 6,520 suspected cases and 811 confirmed cases of Lassa fever had been reported across 21 states and 105 local government areas.

The NCDC noted that the number of newly confirmed cases in Week 28 remained the same as in Week 27, with fresh infections reported in Ondo, Edo, and Benue states.

According to the report, 89 percent of confirmed cases came from five states: Ondo (32%), Bauchi (23%), Edo (17%), Taraba (14%), and Ebonyi (3%). The remaining 11 percent were reported from 16 other states.

The age group most affected by the outbreak is between 21 and 30 years, with the median age of confirmed cases at 30.

In the report, the NCDC stated:
"In Week 28, the number of new confirmed cases is the same as in epidemiological Week 27 of 2025. These were reported in Ondo, Edo, and Benue States."

It added:
"Cumulatively, as of Week 28, 2025, 152 deaths have been reported with a Case Fatality Rate (CFR) of 18.7 percent, which is higher than the CFR for the same period in 2024 (17.3 percent)."

"Of the 89 percent confirmed cases, Ondo reported 32 percent, Bauchi 23 percent, Edo 17 percent, Taraba 14 percent, and Ebonyi 3 percent."

"Eighty-nine percent of all confirmed Lassa fever cases were reported from five states (Ondo, Bauchi, Edo, Taraba, and Ebonyi), while 11 percent were reported from 16 other states with confirmed Lassa fever cases."

The NCDC further noted that there were no new healthcare workers infected in the reporting week. It added that the national Lassa fever multi-partner, multi-sectoral Technical Working Group is coordinating response activities at all levels.