Australia Confirms First Diphtheria Fatality in Decade Amid Significant Outbreak

Australia has reported its first fatality from diphtheria in nearly ten years, occurring against the backdrop of the country’s most severe outbreak of the vaccine-preventable illness in recent decades. The Northern Territory (NT) officially declared a diphtheria outbreak in March, with subsequent cases emerging in Western Australia, South Australia, and Queensland. While case numbers began to climb in late 2025, a steep surge was observed in February. This year alone has seen 245 confirmed infections, marking the largest outbreak since 1991, with the majority of cases concentrated within remote Indigenous communities.

On Tuesday, NT Health Minister Steve Edgington revealed that autopsy results, verified by an independent laboratory overseas, confirmed diphtheria as the cause of death for a man who passed away in April at Royal Darwin Hospital. This marks the first such death in the territory since 2018.

In response to the crisis, the government has intensified vaccination initiatives in high-risk regions. Health officials noted on Tuesday that new case numbers are beginning to decline. “Our government has taken this situation very seriously, and we are working hard to understand the causes and working to contain the situation,” Minister Edgington stated. He added that 10,407 vaccinations have been administered since March 30.

Historical data from the NT shows that between January of last year and May this year, the region recorded 163 diphtheria cases. This included 48 instances of respiratory diphtheria and 115 cases of cutaneous diphtheria, the latter of which is transmitted through direct skin contact.

The outbreak has also impacted Western Australia, where health officials confirmed two cases of respiratory diphtheria in March—the first such occurrences in the state in over half a century. Geographically, 60% of this year’s cases are located in the Northern Territory, followed by Western Australia with approximately 36%. A smaller number of cases have been reported in South Australia, with even fewer in Queensland.

Health authorities are strongly urging residents in affected areas to ensure their immunizations are current, with a specific focus on teenagers and adults requiring booster doses. To facilitate this, NT Health has established pop-up clinics in Darwin, Katherine, and Alice Springs to promote the vaccination campaign. The department emphasized that vaccines remain “the most important measure for preventing, protecting and reducing transmission.”

Both strains of the bacteria are vaccine-preventable. Standard childhood immunization schedules typically involve five doses administered between the ages of two months and four years, followed by a booster between ages 12 and 13. Respiratory diphtheria can be life-threatening, often presenting with fever, chills, and a sore throat that may progress to breathing and swallowing difficulties. In contrast, cutaneous diphtheria typically manifests as slow-healing sores or ulcers on exposed skin areas, usually resulting in non-severe illness.

According to the national broadcaster ABC, the previous recorded death from diphtheria occurred in 2018. Highlighting the severity of the current situation, Australia’s Chief Medical Officer, Professor Michael Kidd, declared diphtheria a communicable disease incident of national significance last week. Additionally, the government has allocated a AU$7.2 million package to enhance vaccination efforts and support resources in the impacted regions.

Source: BBC News Generated at: 2026-05-26 07:09:38 UTC