Influenza in Sweden – Season 2025–2026
This report describes the monitoring and surveillance systems for influenza in use during the 2025–2026 winter season and the results of both epidemiological and virological surveillance. Data are also compared to previous influenza seasons. See also the tables and figures section as well as the appendices.
Appendices 1, 2 and 3 contain phylogenetic trees for influenza A(H1N1)pdm09, influenza A(H3N2) and influenza B/Victoria, respectively. These are available upon request from our registrar. Please provide the article number (26177) and the title of the report.
The report has been prepared for the World Health Organization (WHO) as part of the Public Health Agency of Sweden’s function as a National Influenza Centre (NIC).
Related reading
- Luftvägsvirus lägesrapporter (in Swedish)
- Influensa – statistik (in Swedish)
Author:
Folkhälsomyndigheten
Published:
Article number:
26177