This video describes the journey of a vaccine for children from development through post-licensure monitoring. Learn about the three phases of clinical trials, vaccine licensing and manufacturing, how a vaccine is added to the U.S. Recommended Immunization Schedule, and how FDA and CDC monitor vaccine safety after the public begins using the vaccine. Comments on this video are allowed in accordance with our comment policy: http://www.cdc.gov/SocialMedia/Tools/…​ This video can also be viewed at https://www.cdc.gov/vaccines/videos/l…