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The United States (U.S.) long-standing vaccine safety program closely and constantly monitors the safety of vaccines. A critical part of the program, the Center for Disease Control and Prevention's (CDC) Immunization Safety Office, identifies possible vaccine side effects and conducts studies to determine whether health problems are caused by vaccines. Data show that the current U.S. vaccine supply is the safest in history. Click here to learn more information on vaccine safety from the CDC..
Traveling somewhere and don't know if you need vaccines? Check out the CDC's user friendly guide for clinicians and travelers.