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Swine flu shot campaign could involve 600 million doses

Friday, June 26, 2009 | 2:40 p.m. CDT; updated 2:47 p.m. CDT, Friday, June 26, 2009

ATLANTA — A potential fall swine flu immunization campaign may involve an unprecedented 600 million doses of vaccine, but health officials are still trying to figure out how to find enough workers to administer all those shots.

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