New figures from the foundation show hospitalisations rose from 80,230 in 2022 to 97,151 in 2025. Children under 14 and adults over 65 made up 70 per cent of all hospital admissions.
Respiratory disease now costs the New Zealand economy about $11.5 billion a year, an increase of $3 billion compared with three years prior, the data shows. The figures span the range of respiratory illnesses, including influenza, RSV and COVID-19.
Foundation chief executive Letitia Harding said there needed to be more than a blanket national response.
"We need to be really looking at ways we can target more effectively, to impact obviously the health and well-being from a respiratory space, but also the impact from a financial burden on the hospital system as well and the healthcare system," she said.