The U.S. Centers for Disease Control and Prevention recently recommended Prevenar 13 for adults aged 19 years or older with impaired immune system.

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And, Pfizer said it has entered into a second supply agreement to produce 480 million doses of the pheumococcal vaccine Prevenar 13 through 2013 with the GAVI Alliance.

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Experts in vaccine research say patients in the U.S. should not be alarmed by a decision by the Japanese health ministry to stop giving children two commonly Used vaccines, Prevenar and ActHIB.

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