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CDC: Flu shot effective more than half of the time.
2004 SEP 1 - (NewsRx.com & NewsRx.net) -- Last season's influenza vaccine was effective more than half the time, despite fears the shot was not an exact match for the flu strain that dominated the United States, the government says.
A study of more than 1300 people in Colorado, including more than 300 who were lab-confirmed to have the flu, found that the vaccine worked about 52% of the time for healthy adults and 38% of the time for those with previous medical conditions, the U.S. Centers for Disease Control and Prevention (CDC) reported.
The flu shot "still provided substantial health benefit," even though its protection was much lower than the up to 90% protection that the vaccine affords when it's well-matched with the top strain circulating during a flu season.
The CDC said the effectiveness rate of the flu shot was similar to other years in which the vaccine's strains did not match what was circulating in public.
The study confirmed that the "health benefits are still very real" for getting a flu shot, said Dr. Bob Jacobson, professor and chairman of pediatrics at the Mayo Clinic, who was not involved in the study.
"It's reassuring to see we are getting some decent effectiveness from the vaccine," he said. "Every year we are facing different ...
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Source: HighBeam Research, CDC: Flu shot effective more than half of the time.