With a total of 273 of these participants testing positive for hep C, the investigators calculated that this equated to a U.S. prevalence rate of 1 percent, or 2.7 million people living with the virus. The estimate range was 2.2 million to 3.2 million people, which overlaps with the previous CDC estimate of 3.2 million people with hep C. That calculation was derived from data spanning from 1999 to 2002.
The CDC estimated that baby boomers—those born between 1945 and 1965—account for 81 percent of Americans with hep C. The demographic has an estimated prevalence rate of 2.6 percent, which is six times that of other adults.
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