The Nigeria Centre for Disease Control and Prevention (NCDC) has confirmed 145 deaths from Lassa fever in 2025.
The latest situation report released on Friday by the agency for epidemiological week 24 (June 9–15), shows that the country recorded 766 confirmed cases from 5,678 suspected infections.
The case fatality rate stood at 18.9 percent, up from 17.6 percent during the same period in 2024.
The agency listed states most affected by the disease to include Ondo, Edo, Bauchi, Taraba, and Ebonyi, which accounted for 91 percent of the confirmed cases.
It pointed out that Ondo alone contributed 31 percent, making it the epicentre of the outbreak.
The Nigerian public health agency observed that health authorities remained concerned about the high fatality rate, despite a decline in new confirmed cases – down to eight from eleven recorded in the previous week.
The agency attributed the development to late presentation of cases, poor health-seeking behaviour, and unsanitary living conditions in high-burden communities.
It identified efforts to contain the outbreak to include deployment of Rapid Response Teams to 10 states, risk communication, environmental sanitation campaigns, and training of health workers in high-risk areas.