Age Differences in Pertussis Epidemics, New South Wales, Australia, 2015 and 2024

Ella F. Madden; Sally L. Ellis; Andrea Parisi; Christine Selvey

doi:10.3201/eid3210.260332

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Age Differences in Pertussis Epidemics, New South Wales, Australia, 2015 and 2024

Ella F. Madden, Sally L. Ellis, Andrea Parisi, Christine Selvey

Emerging Infectious Diseases2026doi:10.3201/eid3210.260332

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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.

Authors

Ella F. Madden#1 Sally L. Ellis#2 Andrea Parisi#3 Christine Selvey#4

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External reference records

Reduced pertussis disease severity in infants following the introduction of pertussis vaccination of pregnant women in Spain, 2015–2019.

10.1016/j.vaccine.2024.03.028 · 2024

Estimating seasonal variation in Australian pertussis notifications from 1991 to 2016: evidence of spring to summer peaks.

10.1017/s0950268818003680 · 2019

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