�A Group Health study in the August 2 issue of The Lancet adds fuel to the growing contestation over how well the flu vaccine protects the elderly.
The study of to a greater extent than 3,500 Group Health patients aged over 65 institute no link between grippe vaccination and risk of pneumonia during three flu seasons. "This suggests that the influenza vaccine doesn't protect seniors as a good deal as has been thought," said Michael L. Jackson, PhD, MPH, a postdoc fellow at the Group Health Center for Health Studies.
"Ours is by far the largest case-control
