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
2025401133105.33818302.36555681.23807810.85471000.6
2025411141585.33714582.36391611.23750600.85411870.6
2025421135005.73643822.46327361.33721690.85408640.6
2025431142545.83685412.56330711.33710480.95423700.6
2025441122396.33573882.86134231.43607010.95301220.6
2025451203746.83806553.46317141.63674811.05373220.7
2025461196397.03689603.76290401.73667091.15364680.8
2025471208897.83760414.36373491.93731231.25478620.9
2025481179249.33118555.35583312.23196961.54782081.1
2025491193199.43545085.36364152.73707701.85474721.3
20255012201411.33726167.86336823.13697492.05473671.6
20255113847714.940594712.16510414.53775982.95566322.3
20255215615219.936768615.06094776.73463234.75189234.3
20255314315418.333215010.46490896.43663094.95552174.9
20260112174313.63688577.76958054.94044983.86017703.4
20260211743612.43676507.46546063.73813882.85612652.2
20260311832812.43508748.16077743.63510252.55201351.9
20260411257612.13347998.15999613.63468262.45030161.8
20260511723111.53664988.16287673.63681372.35371421.7
20260612419911.73815118.56448333.63816352.45628901.7
20260712810511.63767158.46428983.53728372.25520841.6
20260812158810.23748347.26428743.23764412.05555251.4
20260912587410.33915787.36549543.03845761.85673241.2
2026101247169.53864776.56520342.63830691.65717221.1
2026111204158.73650835.66419752.43747131.45578540.9
2026121220898.23805004.96551952.23792301.35690260.9
2026131174447.63567254.36345792.13682991.25537990.8