�U.S. Outpatient Influenza-like Illness Surveillance Network (ILINet):<br> Percentage of Visits for ILI by Age Group Reported by A Subset of ILINet Providers<br>Week 21, Season 2024-2025
U.S. Outpatient Influenza-like Illness Surveillance Network (ILINet):
Percentage of Visits for ILI by Age Group Reported by A Subset of ILINet Providers
2024-2025 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 |
| 202440 | 113887 | 6.1 | 388847 | 3.1 | 643705 | 1.4 | 374920 | 0.9 | 519249 | 0.6 |
| 202441 | 114337 | 6.4 | 380182 | 3.3 | 627880 | 1.4 | 369845 | 0.9 | 517635 | 0.6 |
| 202442 | 115594 | 6.5 | 387547 | 3.5 | 636990 | 1.5 | 371331 | 1.0 | 521587 | 0.7 |
| 202443 | 122328 | 7.0 | 414046 | 3.8 | 656253 | 1.6 | 382979 | 0.9 | 532339 | 0.7 |
| 202444 | 122443 | 7.5 | 409543 | 3.8 | 651546 | 1.7 | 376034 | 1.0 | 524865 | 0.7 |
| 202445 | 129501 | 8.1 | 414430 | 4.0 | 663216 | 1.8 | 380229 | 1.1 | 522068 | 0.8 |
| 202446 | 128290 | 8.7 | 398090 | 4.4 | 643270 | 2.0 | 370186 | 1.2 | 507793 | 0.8 |
| 202447 | 131866 | 9.2 | 402280 | 4.7 | 641498 | 2.1 | 370508 | 1.3 | 510560 | 0.9 |
| 202448 | 132996 | 10.3 | 336175 | 5.1 | 568149 | 2.3 | 323680 | 1.5 | 460195 | 1.0 |
| 202449 | 134457 | 10.1 | 380875 | 4.9 | 638126 | 2.6 | 368540 | 1.8 | 519615 | 1.3 |
| 202450 | 138871 | 11.0 | 396146 | 6.0 | 644944 | 2.9 | 373755 | 2.0 | 522638 | 1.4 |
| 202451 | 152076 | 13.3 | 403938 | 8.1 | 655370 | 3.8 | 378345 | 2.5 | 528539 | 1.8 |
| 202452 | 164369 | 16.5 | 352806 | 10.1 | 611459 | 5.5 | 346562 | 4.0 | 489916 | 2.9 |
| 202501 | 153784 | 15.7 | 343167 | 8.0 | 660787 | 5.5 | 376880 | 4.3 | 534652 | 3.3 |
| 202502 | 123797 | 13.4 | 343349 | 7.3 | 645815 | 4.8 | 373234 | 3.8 | 521135 | 2.6 |
| 202503 | 128176 | 14.4 | 379183 | 9.0 | 660246 | 4.8 | 386455 | 3.6 | 536284 | 2.4 |
| 202504 | 132152 | 16.2 | 371556 | 11.0 | 634927 | 5.8 | 364788 | 4.3 | 500347 | 2.7 |
| 202505 | 140927 | 16.9 | 424471 | 11.9 | 681457 | 6.5 | 399057 | 4.9 | 552090 | 3.2 |
| 202506 | 142103 | 18.0 | 428565 | 12.5 | 681380 | 6.5 | 401882 | 5.1 | 549204 | 3.6 |
| 202507 | 131237 | 16.8 | 388221 | 11.6 | 651516 | 6.2 | 384017 | 5.0 | 527981 | 3.7 |
| 202508 | 122305 | 15.0 | 357998 | 9.4 | 632095 | 5.5 | 368031 | 4.3 | 507993 | 3.3 |
| 202509 | 119527 | 12.7 | 377450 | 7.4 | 654819 | 4.4 | 391532 | 3.5 | 551685 | 2.7 |
| 202510 | 117000 | 11.7 | 370689 | 6.9 | 641241 | 3.8 | 380731 | 2.9 | 535924 | 2.2 |
| 202511 | 119001 | 10.6 | 376787 | 6.3 | 643100 | 3.3 | 380566 | 2.5 | 540350 | 1.8 |
| 202512 | 117617 | 9.3 | 366908 | 5.3 | 643485 | 2.8 | 377876 | 2.0 | 532780 | 1.5 |
| 202513 | 115407 | 8.5 | 364840 | 4.7 | 632318 | 2.5 | 369394 | 1.7 | 523659 | 1.3 |
| 202514 | 111443 | 7.6 | 357114 | 4.1 | 623914 | 2.1 | 361381 | 1.5 | 511497 | 1.1 |
| 202515 | 110282 | 7.5 | 354373 | 3.8 | 622640 | 1.9 | 362172 | 1.3 | 514119 | 0.9 |
| 202516 | 112269 | 7.1 | 354174 | 3.5 | 618671 | 1.8 | 365390 | 1.2 | 525125 | 0.9 |
| 202517 | 112587 | 6.9 | 357058 | 3.3 | 625001 | 1.8 | 368130 | 1.2 | 529005 | 0.9 |
| 202518 | 111437 | 6.5 | 365492 | 3.0 | 626756 | 1.6 | 366931 | 1.0 | 529719 | 0.8 |
| 202519 | 108473 | 6.3 | 361295 | 2.9 | 629014 | 1.5 | 368947 | 1.0 | 529685 | 0.7 |
| 202520 | 109570 | 6.3 | 359383 | 2.9 | 631861 | 1.4 | 368624 | 1.0 | 531831 | 0.7 |
| 202521 | 107233 | 6.0 | 343663 | 2.7 | 628927 | 1.3 | 368974 | 0.9 | 531347 | 0.7 |