Diphtheria Cases Exceed Ten Thousand as Northern Nigeria Struggles to Cope

An outbreak of diphtheria is sweeping through Nigeria’s northern states, with Plateau, Kano, and Katsina all reporting active outbreaks that are straining local health facilities. Nationally, the NCDC says more than 10,000 diphtheria cases have been confirmed in 2026 alone, building on what was already described as the country’s worst outbreak in over a decade. Health officials across the affected states cite the same recurring pattern of overcrowded, under-resourced treatment centres, chronic shortages of diphtheria antitoxin, and a population in which a large share of sick children have never been vaccinated.

In Plateau State, the Commissioner for Health, Dr Nicholas Baamlong, disclosed on September 1 that 23 people have died and 143 others are suspected to have contracted the disease in Jos North Local Government Area over the past two weeks, with the Rikkos community being the worst affected. Nine patients are currently receiving treatment in isolation at the Jos University Teaching Hospital and the Plateau State Specialist Hospital.

Baamlong pointed to a shortage of diphtheria antitoxin and the late presentation of patients as the two biggest obstacles to containing the outbreak, and said the state has appealed to the Nigeria Centre for Disease Control and Prevention (NCDC) for antitoxin supplies and specialised sample collection containers.

Kano, the epicentre of Nigeria’s diphtheria crisis since it first flared there in December 2022, continues to carry the heaviest burden in the country. The Kano State Centre for Disease Control (KNCDC) says the state has recorded more than 39,000 suspected cases since the outbreak began, of which over 32,000 have been confirmed, with more than 16,000 of those confirmed cases occurring in children who had never received a single dose of vaccine. A political row broke out in late August after a state lawmaker alleged that 50 children had died of diphtheria in Rano Local Government Area alone.

KNCDC’s Director-General, Prof. Muhammad Adamu-Abbas, disputed the figure as “unverified,” putting Rano’s toll at two deaths in 2026 and 29 cumulatively since July 2023, while acknowledging that 94% of affected patients in the area had no vaccination history and 91% presented late for care.

In Katsina, health authorities report over 1,000 suspected cases so far this year and 719 symptomatic patients, with officials describing a recent uptick in hospital admissions even as the state commissioner urged an early warning, early response approach among caregivers.

What makes the outbreak striking is that diphtheria is almost entirely preventable. A cheap, effective vaccine, usually given as part of the routine DPT (diphtheria-pertussis-tetanus) immunisation series, has existed for decades and has all but eliminated the disease from most of the world. Nigeria’s neighbors and peer economies with strong routine immunisation systems rarely see outbreaks like this one; when cases do appear elsewhere, they are typically isolated and quickly contained.

Diphtheria in Nigeria today sits alongside polio and cholera as diseases the country continues to battle years or decades after other nations eliminated them, not because the science or the vaccines are unavailable, but because the systems needed to deliver them consistently to every community are not.

Several converging factors explain why diphtheria, like polio and cholera before it, keeps resurfacing in Nigeria’s northern states in particular. A legacy of mistrust dating back to 1996 explains much of the vaccine hesitancy that undermines immunisation campaigns in the north. During a 1996 meningitis epidemic in Kano, the U.S. pharmaceutical company Pfizer tested an experimental antibiotic, Trovan, on children without what Nigerian authorities and families later said was proper informed consent. Several children died and others were left with disabilities. The case triggered years of litigation in Nigerian and U.S. courts, and in 2009 Pfizer agreed to a settlement worth tens of millions of dollars with the Kano State government, alongside separate payments to affected families. The episode did lasting damage to public confidence in Western medicine and vaccination campaigns in parts of the north, feeding into the polio vaccine boycotts of the early 2000s and a wariness toward immunisation drives that public health workers say still lingers today, particularly in harder to reach rural communities.

Health workers and residents in affected states have long pointed to a broader sense that northern Nigeria receives less sustained public health attention and infrastructure investment than other parts of the country, a perception reinforced every time an outbreak exposes gaps in antitoxin stockpiles, laboratory capacity, or the number of functioning primary health centres. Whether or not the disparity is fully intentional, the practical effect is the same: outbreaks are detected late, treatment capacity fills up fast, and diseases that should be rare become recurring emergencies.

Northern Nigeria has some of the country’s highest poverty rates and lowest levels of formal employment. Families with little income are less able to travel to distant health facilities, take time off to seek care early, or absorb the cost of treatment, a dynamic health officials in Kano reference when noting that 91% of patients presented late. Poverty also drives overcrowded housing, which accelerates the person to person spread of a disease like diphtheria.

Ultimately, routine immunisation coverage, functioning primary healthcare, clean water and sanitation, and rapid response capacity all depend on sustained public investment, the kind that has historically been harder to sustain in northern states with weaker local revenue bases and competing security and humanitarian demands.

Ending recurring outbreaks like this one requires more than emergency antitoxin shipments. It requires rebuilding routine immunisation coverage to close the pool of unvaccinated children that outbreaks feed on, investing in primary healthcare so people don’t have to travel far or pay heavily to get early treatment, strengthening disease surveillance so outbreaks are caught before they reach hundreds of cases, and sustained, transparent community engagement to rebuild the trust that events like the Trovan case damaged. Without addressing those underlying gaps diphtheria will continue to reoccur.