U.S. Outpatient Influenza-like Illness Surveillance Network (ILINet):
Percentage of Visits for ILI by Age Group Reported by A Subset of ILINet Providers
2025-2026 Season
0-4 years 5-24 years 25-49 years 50-64 years 65+ years
Week Total Visits ILI Total Visits ILI Total Visits ILI Total Visits ILI Total Visits ILI
2025401133105.33818362.36555501.23807790.85470840.6
2025411141575.33714602.36391541.23750580.85411770.6
2025421135025.73643732.46327271.33721700.85408500.6
2025431142525.83685402.56330601.33710430.95423610.6
2025441122376.33573882.86134141.43606950.95301150.6
2025451203756.83806523.46317091.63674841.05373130.7
2025461196407.03689633.76290311.73667101.15364610.8
2025471208887.83760354.36373371.93731201.25478520.9
2025481179199.33118545.35583212.23196901.54781951.1
2025491193159.43545015.36364132.73707631.85474521.3
20255012182611.33717317.86324793.13691122.05464951.6
20255113835214.940521412.16500964.53771182.95560162.3
20255215302819.835914615.15949026.73390774.75098854.3