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This resource was part of AHRQ's Public Health Emergency Preparedness program, which was discontinued on June 30, 2011, in a realignment of Federal efforts.

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Table 3. Mean Estimates of Influenza Impact From National Planning Scenarios15

Health Outcomes 15% GRAa 35% GRAa
Fatalities 87,000 207,000
Hospitalizations 314,400 733,800
Outpatients Visit 18.1 million 42.2 million
Self-care Ill 21.3 million 49.7 million

a GRA = gross rate of attack; the percentage of US population with a clinical case of influenza.

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