Australia is facing a worrying resurgence of diphtheria. It is a bacterial disease that has largely disappeared from public concern due to decades of successful vaccination programs. Health authorities have confirmed more than 230 infections this year, marking the country’s biggest outbreak in decades. Most of the cases have appeared in the Northern Territory and Western Australia. There are infections, which have also been reported in Queensland and South Australia. The sudden peak has compelled Australian authorities to improve vaccination efforts and allot additional funding for emergency public health responses.
According to NDTV, Australian Health Minister Mark Butler described the current situation as “a very serious outbreak of a very serious disease.”
Diphtheria was one of the leading causes of illness and death among children globally (AI-Generated)
Why is diphtheria considered a dangerous infection?
Diphtheria is caused by the bacterium Corynebacterium diphtheriae, which mainly affects the throat and upper respiratory tract. In some cases, it can also infect the skin. The bacteria release toxins capable of damaging tissues and spreading through the bloodstream, potentially affecting vital organs.
Diphtheria was one of the leading causes of illness and death among children globally. Vaccination has significantly reduced cases over the years, but declining immunisation rates can allow the disease to re-emerge rapidly.
The infection generally appears in two forms. Respiratory diphtheria affects the throat and airways and is considered more severe, while cutaneous diphtheria affects the skin and causes ulcers or painful sores.
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Symptoms and how the disease spreads
The symptoms usually appear within two to five days after exposure. The common signs include sore throat, fever, swollen glands in the neck, weakness, difficulty swallowing, and breathing problems. One of the most recognised symptoms is a thick grey or white coating that forms in the throat or on the tonsils, which can block airways and become life-threatening if untreated. Skin infections linked to diphtheria may cause slow-healing ulcers, bluish patches, and infected wounds.
The disease spreads mainly through respiratory droplets when an infected person coughs, sneezes or talks. It can also spread through direct contact with infected skin lesions or contaminated surfaces. Health experts warn that even people with mild symptoms may still transmit the infection to others.
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Doctors warn that untreated diphtheria can lead to severe complications, including breathing difficulties, heart inflammation (AI-Generated)
Falling vaccination rates raise concern
According to NDTV, the public health experts believe several factors may have contributed to the current outbreak. The reduced vaccination coverage, missed booster doses, and growing vaccine misinformation are among the major concerns flagged by officials. The remote regions with limited access to healthcare are also facing difficulties with timely diagnosis and immunisation.
Doctors warn that untreated diphtheria can lead to severe complications, including breathing difficulties, heart inflammation, nerve damage, and even death in serious cases.
The authorities continue to stress that vaccination remains the strongest defence against diphtheria. Health officials are urging parents to ensure children receive routine immunisations on time, while adults are being advised to check whether booster doses are due.
The outbreak has become a stark warning that diseases once thought to be under control can quickly return when public immunity begins to decline.
