Volume 19, Number 3—March 2013
Research
Effects of Vaccine Program against Pandemic Influenza A(H1N1) Virus, United States, 2009–2010
Table 5
Estimated number of deaths prevented by vaccination against influenza A(H1N1)pdm09 virus*
Subgroup | No. deaths without a vaccination program (range) | No. deaths prevented due to a vaccination program (range) | No. doses administered to avoid 1 death (range) |
---|---|---|---|
6 mo–9 y | 759 (538–1,117) | 9 (5–15) | 3,087,138 (1,745,154–5,761,939) |
10–24 y, (10–17 all, 18–24 NP) | 1,028 (729–1,514) | 30 (20–50) | 525,012 (319,229–814,797) |
Pregnant 18–64 y | 533 (378–789) | 37 (25–60) | 64,787 (40,177–96,492) |
25–64 y, HR, NP | 3,077 (2,182–4,533) | 84 (54–139) | 109,638 (66,300–171,951) |
25–64 y, HCW, non-HR, NP | 1,175 (833–1,735) | 53 (35–87) | 117,312 (71,786–179,325) |
25–64, contact with <6 mo, non-HCW, non-HR, NP | 766 (544–1,128) | 18 (12–30) | 112,945 (68,351–175,889) |
25–64 y, noncontact with <6 mo, non-HCW, non-HR, NP | 3,792 (2,692–5,578) | 52 (32–86) | 297,838 (177,870–479,999) |
>65 y |
1,653 (1,173–2,433) |
32 (20–53) |
339,494 (204,961–533,711) |
Total | 12,783 (9,069–18,826) | 315 (201–520) | 281,305 (170,343–439,832) |
* All values are estimates. Vaccinations beginning at week 40 with a distribution of the vaccines as outlined in Table 2. NP, not pregnant; HR, high risk; HCW, health care worker; contact, household contacts and caregivers of children <6 mo of age.
1Current affiliation: Merck & Co., Inc., Lansdale, Pennsylvania, USA.