U.S. Outpatient Influenza-like Illness Surveillance Network (ILINet):
Percentage of Visits for ILI by Age Group Reported by A Subset of ILINet Providers
2023-2024 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 |
| 202340 | 117875 | 7.6 | 359870 | 3.5 | 566952 | 1.6 | 322865 | 1.1 | 425429 | 0.9 |
| 202341 | 120032 | 8.1 | 351845 | 3.6 | 567638 | 1.8 | 327798 | 1.2 | 432365 | 0.9 |
| 202342 | 120799 | 8.7 | 354582 | 3.9 | 563063 | 1.8 | 323017 | 1.3 | 432095 | 1.1 |
| 202343 | 126551 | 9.0 | 362175 | 4.2 | 567526 | 2.0 | 326473 | 1.4 | 435213 | 1.2 |
| 202344 | 126861 | 9.4 | 360788 | 4.7 | 554221 | 2.2 | 317017 | 1.5 | 423862 | 1.3 |
| 202345 | 138375 | 10.4 | 371702 | 5.4 | 574725 | 2.5 | 328133 | 1.7 | 434859 | 1.4 |
| 202346 | 136542 | 10.9 | 361939 | 5.7 | 562787 | 2.8 | 320359 | 1.9 | 431148 | 1.5 |
| 202347 | 137942 | 11.2 | 311697 | 5.9 | 512306 | 2.9 | 291415 | 2.1 | 402763 | 1.6 |
| 202348 | 140701 | 11.0 | 361553 | 5.7 | 594214 | 3.5 | 335643 | 2.5 | 456070 | 1.9 |
| 202349 | 136756 | 11.7 | 373949 | 6.9 | 587478 | 3.6 | 337788 | 2.6 | 452253 | 2.0 |
| 202350 | 141371 | 12.8 | 379788 | 8.7 | 586542 | 4.3 | 334629 | 3.1 | 445844 | 2.2 |
| 202351 | 148271 | 14.1 | 367569 | 10.3 | 591492 | 5.5 | 336769 | 4.0 | 455398 | 2.8 |
| 202352 | 144645 | 15.5 | 303833 | 9.8 | 559386 | 6.5 | 324001 | 4.9 | 464503 | 3.6 |
| 202401 | 129551 | 13.6 | 314841 | 7.3 | 603847 | 5.8 | 340792 | 4.5 | 460629 | 3.3 |
| 202402 | 110340 | 11.4 | 317997 | 6.6 | 587013 | 4.6 | 341089 | 3.6 | 457280 | 2.6 |