Australia’s whooping cough surge is not over – and it doesn’t just affect babies

By Niall Johnston, Conjoint Associate Lecturer, Faculty of Medicine, UNSW Sydney
Helen Quinn, Senior Research Fellow, National Centre for Immunisation Research and Surveillance & Senior Lecturer, Children’s Hospital Westmead Clinical School, University of Sydney
Phoebe Williams, Paediatrician & Infectious Diseases Physician; Senior Lecturer & NHMRC Fellow, Faculty of Medicine, University of Sydney

Whooping cough (pertussis) is always circulating in Australia, and epidemics are expected every three to four years. However, the numbers we’re seeing with the current surge – which started in 2024 – are higher than usual epidemics.

Vaccines for this highly infectious respiratory infection have been available in Australia for many decades. Yet it remains a challenging infection to control because immunity (due to prior infection, or vaccination) wanes…

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