Diphtheria cases are increasing again across the Northern Territory, with health authorities reporting a rise in infections and one patient from Tennant Creek remaining critically unwell. The patient was diagnosed with advanced respiratory diphtheria and is receiving intensive care treatment in Alice Springs Hospital.
The Northern Territory has been experiencing a significant diphtheria outbreak, with cases reported across multiple regions. Health officials said the number of infections had increased after previously showing signs of decline, creating renewed concerns about the spread of the vaccine-preventable disease.
Diphtheria is a bacterial infection that can affect the throat, airways, or skin. Respiratory diphtheria can become life-threatening because the bacteria can produce toxins that damage the body and may cause breathing difficulties, heart complications, or other serious health problems if not treated quickly.
The Tennant Creek patient initially presented at the local hospital with symptoms linked to advanced respiratory diphtheria before being transferred for specialist care. Health authorities continue monitoring the situation and providing treatment and support to affected communities.
Since the start of 2026, hundreds of diphtheria cases have been recorded in the Northern Territory, including both respiratory and cutaneous forms of the disease. Authorities said many cases have occurred in remote and regional communities, where access to healthcare services can be more challenging.
Health departments and Aboriginal health organisations have increased vaccination campaigns and community education programs to reduce transmission. Vaccination remains the strongest protection against severe forms of diphtheria, particularly respiratory infections that can lead to serious illness.
Authorities are encouraging residents to ensure their vaccinations are up to date and seek medical attention if they experience symptoms such as sore throat, fever, difficulty breathing, or unusual skin infections. Early diagnosis and treatment are considered critical in preventing severe outcomes.
The outbreak has highlighted ongoing public health challenges in remote parts of Australia, including the need for better access to healthcare services, vaccination programs, and community awareness. Health workers continue visiting affected communities to provide information and support.
Officials said they are working closely with local healthcare providers and communities to control the spread of the disease. Monitoring, vaccination, and early treatment remain key parts of the response as authorities continue managing the outbreak.
