According to CDC estimates, children and young adults continue to be most vulnerable to the H1N1 flu. From mid-April, when the virus first surfaced, until November, 47 million Americans came down with the swine flu. About 16 million of those people were children under 18 years of age, and about 27 million were adults between 18 and 64.
During the same period, an estimated 9,820 people died, including 1,090 children aged 17 and younger, as well as 7,450 people aged 18 to 64, according to the CDC.
For more on H1N1 swine flu, visit the U.S. Department of Health and Human Services.
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