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. 2020 Jan 6;71(8):e368–e376. doi: 10.1093/cid/ciz1244

Table 3.

Estimates of Influenza A(H1N1)pdm09-Associated Illnesses, Medical Visits, Hospitalizations, and Deaths Prevented by Influenza Vaccination—United States, 2018–2019 Influenza Season

Illnesses Medical Visits Hospitalizations Deaths
Age Group Number Prevented 95% UIa Number Prevented 95% UIa Number Prevented 95% UIa Number Prevented 95% UIa
6 months–4 years 1 176 881 (633 739– 2 482 324) 788 510 (425 367– 1 674 522) 9555 (5264–19 769) 100 (22–339)
5–17 years 687 757 (280 148– 1 181 100) 357 634 (145 741– 617 933) 2420 (985–4186) 24 (3–79)
18–49 years 915 849 (541 365– 1 386 802) 338 864 (198 438–518 320) 5742 (3404–8630) 210 (100–522)
50–64 years 761 047 (135 579– 1 667 583) 327 250 (58 212– 721 722) 8714 (1580–19 206) 505 (82–1622)
≥65 years 157 190 (0– 810 180) 88 026 (0– 451 043) 11 754 (0–59 698) 1075 (0–6011)
All ages 3 698 723 (2 665 133– 5 594 554) 1 900 284 (1 356 641– 2 981 289) 38 186 (20 104–89 304) 1915 (515–6971)

Abbreviation: UI, uncertainty interval.

a95% UI from 5000 Monte Carlo simulations.