How do vaccines help babies fight infections? | How Vaccines Work

How do vaccines work with your child’s immune system to fight infections? Learn more here: https://www.cdc.gov/vaccines/parents/childhood-vaccines Join baby Jack and his #parents as they find out how #vaccines help train your baby’s immune system to help prevent disease in this #HowVaccinesWork video. Vaccines contain a small number of weakened or dead antigens, the parts of germs that cause a baby’s immune system to go to work. After babies receive a vaccine, their immune system will remember that antigen and attack it if it ever enters the body again. Vaccines only contain a tiny fraction of the antigens that babies encounter in their everyday surroundings. It may take a few weeks for a vaccine to start working. Babies may also need more doses later to protect them. That’s why the recommended immunization schedule exists: it’s designed to give babies the best protection against 14 serious diseases by two years old. Learn more about #childhood immunizations by visiting https://www.cdc.gov/vaccines/parents/childhood-vaccines or talk with your child’s doctor. Comments on this video are allowed in accordance with our comment policy: http://www.cdc.gov/SocialMedia/Tools/CommentPolicy.html This video can also be viewed at https://www.cdc.gov/vaccines/videos/low-res/CDC_How_Vaccines_Work_Script2_LowRes.mp4