Diphtheria in Australia
As of 26 August 2026, a total of 539 confirmed diphtheria cases have now been reported across Australia during 2026. The majority of cases have been reported in the Northern Territory (289 cases) and Western Australia (227 cases). Please see our Topics in Brief article for further details on diphtheria.
Diphtheria in Australia
On 18 May 2026, the Australia Centre for Disease Control reported an increase in the number of diphtheria cases across Australia, with a total of 221 confirmed cases reported in 2026. The majority of cases have been reported in the Northern Territory (133 cases) and Western Australia (79 cases). Please see our Topics in Brief article for further details on diphtheria.
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