Volume 19, Number 3—March 2013
Research
Effects of Vaccine Program against Pandemic Influenza A(H1N1) Virus, United States, 2009–2010
Table 8
Outcomes prevented | Base estimate of vaccine effectiveness (range)† | Lower vaccine effectiveness (range)‡ | Higher vaccine effectiveness (range)§ |
---|---|---|---|
Clinical cases | 1,029,157 (712,908–1,458,930) | 639,449 (442,971–907,688) | 1,418,678 (983,671–2,004,053) |
Hospitalizations | 6,240 (3,923–10,393) | 3,857 (3,923–6,418) | 8,674 (3,923–14,461) |
Deaths | 315 (201–520) | 193 (124–319) | 438 (279–723) |
*Data reflect calculations made for scenario 6, outcomes of assuming different vaccine effectiveness.
†Assumed 62% effectiveness for all groups except those >65 y, for whom 43% effectiveness was assumed.
‡Assumed 40% effectiveness for all groups except the elderly, for whom 20% effectiveness was assumed.
§Assumed 85% effectiveness for all groups except the elderly, for whom 55% effectiveness was assumed.
1Current affiliation: Merck & Co., Inc., Lansdale, Pennsylvania, USA.
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