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Group Health Cooperative Center for Health Studies
Flu vaccine may not protect seniors well
August 20th, 2008
A Group Health study in the August 2 issue of The Lancet adds fuel to the growing controversy over how well the flu vaccine protects the elderly. The study of more than 3,500 Group Health patients age 65�� found no link between flu vaccination and risk of pneumonia during three flu seasons. "This suggests that the flu vaccine doesn't protect seniors as much as has been thought," said Michael L. Jackson, PhD, MPH, a postdoctoral fellow at the Group Health Center for Health Studies. "Ours is by far the largest case-control study of flu vaccine in the elderly," Jackson added. This kind of study compares "cases" with "controls." The cases...
Source: Vaccine Weekly (2008-08-20)
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