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Age Differences in Pertussis Epidemics, New South Wales, Australia, 2015 and 2024
Emerging Infectious Diseases
|September 30, 2026
Abstract:
We compared data from the 2015 and 2024 pertussis epidemics in New South Wales, Australia. In 2024, we found twice as many notifications and a shift in distribution to older children. COVID-19 interventions and lack of circulation of pertussis likely contributed to an age cohort immunity gap and increased infections.
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