Health authorities have declared New Zealand in the early stages of a whooping cough epidemic following a sustained rise in cases across the country.

The announcement, based on recommendations from health officials, marks the activation of a nationally coordinated response to the outbreak.

Data from ESR (Institute of Environmental Science and Research) revealed 263 cases in the past four weeks alone, the highest recorded for any four-week period in 2024.

This resurgence follows significant spikes earlier in May, June, and July.

Dr Nicholas Jones, Director of Public Health, explained that several countries are experiencing record levels of whooping cough (pertussis), potentially due to suppressed infection rates during the COVID-19 pandemic.

“New Zealand should also prepare for elevated case numbers over the next 12 months or more,” Dr Jones said.

He emphasised that Māori and Pacific babies, or pēpi, are likely to be most affected.

“Our main concern is the risk of severe illness among babies too young to be immunised or whose immunisations are delayed. The focus must remain on timely vaccination, particularly during pregnancy,” Dr Jones noted.

Dr Susan Jack, National Clinical Director of Protection at Health New Zealand | Te Whatu Ora, stated that the National Public Health Service is well-prepared to address the epidemic, with a response team already coordinating efforts nationwide.

“Whooping cough is highly contagious and can be fatal, particularly for newborns,” Dr Jack said.

“Three babies died from whooping cough last year, and our goal is to prevent that from happening again. This will be a marathon, not a sprint.”

Health experts are urging healthcare professionals to promote vaccinations and remain alert for symptoms.

Pregnant individuals are encouraged to receive the free pertussis vaccine from 16 weeks of pregnancy, ensuring protection for their babies.

Routine vaccinations for children are scheduled at 6 weeks, 3 months, and 5 months, with boosters at 4 years and 11 years (Year 7).

Adults are eligible for a free pertussis and tetanus booster at ages 45 and 65.

For those who missed vaccinations, Dr Jack reassured, “It’s never too late to catch up.”