The development has heightened public-health concerns in the state, particularly in communities where children make up a significant proportion of those affected.
The Plateau State Epidemiologist, Dr Maren Damulak, disclosed the latest figures during a briefing with journalists in Jos.
He said most of the suspected cases had been recorded in **Jos North Local Government Area**, with Rikkos community identified among the worst-affected areas.
The outbreak has prompted the Plateau State Government to intensify measures aimed at containing transmission.
Health authorities are carrying out surveillance, contact tracing, community sensitisation and vaccination activities in affected communities.
The state government has also temporarily closed all public and private primary and secondary schools across Plateau State.
The school closure took effect on **September 7, 2026**, following the detection of suspected diphtheria cases in Jos North, Jos South, Bassa and Wase Local Government Areas.
The government said the measure was intended to reduce the risk of transmission among pupils, students and school staff while health officials strengthen surveillance and response operations.
Diphtheria is a highly contagious bacterial infection that mainly affects the throat and nose.
The disease can spread through respiratory droplets and close contact with an infected person.
Symptoms can include fever, sore throat, difficulty breathing and swallowing, swollen glands and a thick membrane in the throat that can obstruct breathing.
Without timely treatment, the infection can cause serious complications and death.
The latest figures have raised particular concern because children account for a significant proportion of those affected in Plateau.
Health authorities have therefore urged parents and residents to take symptoms seriously and seek medical attention as early as possible.
Some suspected patients are currently receiving treatment at the **Jos University Teaching Hospital** and the **Plateau State Specialist Hospital**, where isolation facilities have been made available.
Authorities are also strengthening contact tracing in communities where cases have been detected.





