diphtheria

Australia is experiencing its most severe diphtheria outbreak in decades, marked by the first reported death from the disease in nearly ten years. The Northern Territory declared an outbreak in March, with cases also identified in Western Australia, South Australia, and Queensland. The rise in cases began in late 2025, escalating sharply in February of the current year. Diphtheria is a serious, preventable bacterial infection that can lead to severe breathing difficulties, heart problems, and nerve damage, and is typically managed through vaccination. The resurgence of this disease highlights the critical importance of widespread immunization programs, as research from Stanford University has modeled significant potential increases in deaths and disabilities from vaccine-preventable diseases like diphtheria if vaccine availability were to cease. This outbreak underscores the ongoing threat posed by diseases that were once largely controlled by vaccination.