Nigeria's Federal Government activated an emergency multi-agency task force in August 2026 to contain a fresh diphtheria outbreak in Kano and Katsina states, deploying 500,000 vaccine doses through the National Primary Health Care Development Agency (NPHCDA), according to Vanguard.
The intervention came after reports that more than 50 children died in communities within Rano Local Government Area (LGA) of Kano State ahead of the federal response. The precise confirmed case count and overall death toll for the 2026 resurgence remain unknown.
Diphtheria is a bacterial infection caused by toxigenic Corynebacterium species. It can block the airway and is potentially fatal, particularly in unvaccinated children. It is preventable by routine childhood vaccination.
The 2026 flare-up follows a prolonged crisis that began when Nigeria officially notified the outbreak on 1 December 2022, initially in Kano and Lagos states, with the Nigeria Centre for Disease Control (NCDC) deploying rapid response teams, according to research published by the US National Institutes of Health.
By 1 October 2023, the NCDC had recorded 13,416 suspected and 8,576 confirmed cases across 116 LGAs in 19 states and the Federal Capital Territory (FCT). The Lancet Microbe reported that 73.6% of cases affected children aged 1 to 14 years, and that Kano alone accounted for approximately 85% of all cases. By 12 October 2023, the disease had caused over 600 deaths, primarily among children.
The hardest-hit states during that period were Kano, Yobe, Katsina, Bauchi, Borno, and Kaduna, which together accounted for 95.8% of cases, The Lancet Microbe reported.
A critical pattern ran through the data. The NCDC found that 80% of confirmed 2023 cases were in unvaccinated individuals, pointing directly to gaps in routine immunisation coverage as the driver of the epidemic's scale.
In response to the 2023 crisis, a National Emergency Task Force was activated on 14 September 2023, co-chaired by the Executive Director of the NPHCDA and the Director General of the NCDC. Its membership included the World Health Organization (WHO), UNICEF, the US Centers for Disease Control and Prevention (US CDC), USAID, and GAVI, the Vaccine Alliance, according to NIH-published research. WHO separately procured 10,050 vials of diphtheria antitoxin and 15,000 vials of the antibiotic erythromycin, and deployed ear, nose, and throat specialists to treatment centres, WHO reported.
Vaccine supply was a recurring constraint. The Kano and Yobe response required 2.69 million doses of tetanus-diphtheria (Td) vaccine and 1.67 million doses of pentavalent vaccine, with a shortfall of 0.78 million pentavalent doses recorded as of early 2024. Nigeria secured 12 million pentavalent doses and had 7 million tetanus-diphtheria doses in transit by late 2023, according to the NIH-published account.
Those efforts did not end transmission. In the months before the August 2026 federal activation, Médecins Sans Frontières (MSF) and the Kano State Ministry of Health ran two emergency vaccination campaigns. The first round, concluding 27 April 2026, reached 348,080 children. The second, from 20 to 24 June 2026, reached 486,948. Together the campaigns administered over 835,000 vaccinations, MSF reported when the emergency intervention concluded in July 2026.
The disease continued to spread regardless. Whether the 2026 strain differs from the one circulating in 2022 and 2023 is not yet known. Current immunisation coverage rates in Rano and other newly affected LGAs have also not been published. It is not known whether the Kano State government has formally declared a public health emergency.
Security challenges have previously limited access by rapid response teams to some affected LGAs in northern Nigeria, adding a further layer of difficulty to containment efforts. The pattern of recurring outbreaks across more than three years, despite successive vaccination campaigns and international support, indicates that coverage gains in the region remain fragile.
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