Pneumonia hospitalizations rose across Canada in last respiratory season

CIHI data show pneumonia hospitalizations in Canada rose about one-third in 2024–25 compared with the prior period, with a 143% increase among children and youth.

Canadian hospital data indicate a notable increase in pneumonia admissions during the 2024–25 respiratory illness season. The Canadian Institute for Health Information reported hospitalizations for pneumonia from April 1, 2024, to March 31, 2025, were higher than in the previous period. Children aged five to 17 saw the largest relative rise, while adults and seniors also experienced increases. Infectious disease specialists cited a strong influenza season and a spike in mycoplasma (walking pneumonia) cases as likely contributing factors. Key details: - CIHI reported pneumonia hospitalizations rose by almost one-third in 2024–25 compared with the previous period. - Hospitalizations for children and youth increased by 143%, from 2,698 to 6,547 patients. - Pneumonia admissions rose by 34% for adults aged 18–64 and by 22% for seniors aged 65 and over. - Clinicians noted the 2024–25 flu season and higher circulation of mycoplasma pneumoniae were likely contributors. - Experts also said influenza can lead to viral or secondary bacterial pneumonia, and that a vaccine for common bacterial causes is part of the routine childhood immunization schedule. Summary: The CIHI figures show pneumonia hospitalizations exceeded pre-pandemic levels across age groups and were especially pronounced among school-age children. Undetermined at this time.