Japan has stoppedusingthe US's Pfizer Inc'sPrevenarandFrance's Sanofi Aventis SA's ActHIBor vaccines while it investigates the deaths of 4children who were inoculated.
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.
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.