The Nigeria Centre for Disease Control and Prevention (NCDC) has confirmed 142 deaths and 747 cases of Lassa fever across 18 states, according to its epidemiological report for week 22 of 2025.
The report, which was released on Tuesday, puts the Case Fatality Rate (CFR) at 19.0 percent—slightly higher than the figure recorded during the same period in 2024.
According to the NCDC, new confirmed cases rose from six in week 21 to eight in week 22, with Ondo, Bauchi, Edo, and Nasarawa states reporting fresh infections.
The situation report further revealed that 91 percent of all confirmed cases were concentrated in five states: Ondo (31%), Bauchi (25%), Edo (16%), Taraba (16%), and Ebonyi (3%).
It also highlighted that the predominant age group affected is between 21 and 30 years, with a median age of 30. The male-to-female ratio among confirmed cases is 1:0.8, indicating a slightly higher prevalence among males.
Despite a decrease in both suspected and confirmed cases compared to 2024, the NCDC says it remains on alert and continues to coordinate national response activities through its multi-partner, multi-sectoral Incident Management System.
The agency urged Nigerians, especially those in high-risk areas, to take necessary precautions to prevent further spread of the disease.