The [[Centers for Disease Control and Prevention]] have formed partnerships with eight large health Management Organizations (HMOs) to continually evaluate vaccine safety. The project contains data on more than 6 million people. Medical records are monitored for potential adverse events following [[immunization]]. | The [[Centers for Disease Control and Prevention]] have formed partnerships with eight large health Management Organizations (HMOs) to continually evaluate vaccine safety. The project contains data on more than 6 million people. Medical records are monitored for potential adverse events following [[immunization]]. |