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 |
| 202540 | 113309 | 5.3 | 381416 | 2.3 | 655548 | 1.2 | 380778 | 0.8 | 547081 | 0.6 |
| 202541 | 114156 | 5.3 | 371458 | 2.3 | 639151 | 1.2 | 375057 | 0.8 | 541174 | 0.6 |
| 202542 | 113502 | 5.7 | 364372 | 2.4 | 632724 | 1.3 | 372169 | 0.8 | 540847 | 0.6 |
| 202543 | 114252 | 5.8 | 368533 | 2.5 | 633052 | 1.3 | 371042 | 0.9 | 542359 | 0.6 |
| 202544 | 112235 | 6.3 | 357385 | 2.8 | 613401 | 1.4 | 360692 | 0.9 | 530106 | 0.6 |
| 202545 | 120374 | 6.8 | 380640 | 3.4 | 631684 | 1.6 | 367475 | 1.0 | 537299 | 0.7 |
| 202546 | 119360 | 7.0 | 368420 | 3.7 | 628299 | 1.7 | 366289 | 1.1 | 535971 | 0.8 |
| 202547 | 118087 | 7.7 | 371052 | 4.2 | 634575 | 1.9 | 371488 | 1.2 | 545294 | 0.9 |