Table 2.
Estimates of Influenza A- and B-Associated Illness, Medical Visits, Hospitalizations, and Deaths Prevented by Influenza Vaccination—United States, 2017–2018 Influenza Season
| Illnesses | Medical Visits | Hospitalization | Death | |||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Age Group | Number Prevented | 95% CrIa | Number Prevented | 95% CrI | Number Prevented | 95% CrI | % Prevented | 95% CrI | Number Prevented | 95% CrI |
| 6 months–4 years | 2 121 511 | (1 445 133, 2 928 929) | 1 421 413 | (971 080, 1 966 976) | 14 790 | (10 075, 20 419) | 41 | (33, 47) | 74 | (0, 189) |
| 5–17 years | 1 366 965 | (613 310, 2 178 412) | 710 822 | (319 168, 1 143 256) | 3748 | (1682, 5973) | 15 | (7, 22) | 89 | (28, 197) |
| 18–49 years | 1 138 407 | (663 181, 1 610 481) | 421 211 | (243 149, 603 887) | 6390 | (3722, 9040) | 7 | (4, 10) | 228 | (119, 403) |
| 50–64 years | 1 792 530 | (673 687, 2 937 768) | 770 788 | (292 197, 1 263 230) | 19 009 | (7144, 31 154) | 10 | (4, 15) | 868 | (330, 1591) |
| ≥65 years | 715 073 | (0, 2 033 756) | 400 441 | (0, 1 145 616) | 65 007 | (0, 184 887) | 9 | (0, 21) | 6796 | (0, 19 844) |
| All ages | 7 134 487 | (5 393 925, 9 310 339) | 3 724 674 | (2 819 761, 4 877 688) | 108 944 | (38 854, 230 943) | 10 | (4, 19) | 8054 | (1059, 21 320) |
Abbreviation: CrI, credible interval.
aThe 95% CrI is from 5000 Monte Carlo simulations.