WASHINGTON, D.C. (AP) -- Attention is shifting to the world's five leading flu vaccine makers. The question is how fast are they really producing swine flu vaccine, and just how do they plan to test that it works?
A meeting of the Food and Drug Administration's scientific advisers offers the first progress report since U.S. scientists delivered the novel virus to manufacturers to make a vaccine.They've succeeded to a degree.
The National Institutes of Health called for a few thousand volunteers, from babies to the elderly, for studies to see if pilot batches are safe and protective.
The first shots should go into adult volunteers' arms in early August, with child studies to follow quickly if there are no signs of immediate side effects.
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