accountthe studies show the shots worked as well as or better than an older pneumococcal vaccine made by Merck (MRK), Pneumovax 23. Prevnar, developed by Pfizer's Wyeth unit, is the world's top-selling vaccine, with 2010 sales of about $3.7 billion. Pfizer...
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Reactions to Studies show Pfizer's child pneumococcal vaccine works well in adults
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