A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
Click a letter to see a list of conditions beginning with that letter.
Click 'Topic Index' to return to the index for the current topic.
Click 'Library Index' to return to the listing of all topics.

Protecting Your Child with Vaccines

Vaccines are an important part of a healthy life for your child. There are many vaccines for children because we can now prevent more diseases. A lot of research has gone into making vaccines that help prevent disease in the easiest way possible.

The sooner children have their vaccines, the sooner they’re protected from illness. Vaccines are an effective way to help your child just enjoy being a kid.

How do vaccines help?

Vaccines help kids:

  • Stay healthy and active.

  • Stay safe from serious infections.

  • Not miss school days.

  • Need fewer doctor visits.

  • Stay safe from complications from illness.

  • Get to feel good and just enjoy being a kid.

Vaccines can also help parents and caregivers:

  • Worry less about their child’s risk of infections.

  • Miss less work time due to caring for a sick child.

  • Avoid medical costs due to illness.

How do vaccines work?

Vaccines tell your child’s own immune system how to prevent certain kinds of disease. A vaccine uses a tiny amount of substance that lets your child’s body build up antibodies to a virus or bacteria. This helps to prevent many types of diseases caused by infection.

A vaccine is most often done with an injection by a small needle into an arm or leg. Some vaccines work in 1 shot. Others need to be done in 2 or more shots over a period of time. Some need to be repeated every year. The flu vaccine is an example. This lets your child’s immune system build up the right amount of antibodies.

Combination vaccines can help prevent more diseases with fewer shots. These vaccines have more than one type of prevention in a single dose.

Are vaccines safe?

Vaccines have been used for many years on millions of children to prevent serious disease. It’s important to know that:

  • Vaccines do not cause illness. Vaccines contain very tiny amounts of inactive forms of germs. They don’t contain enough of any germs to cause illness. They just contain enough to help your child’s body recognize the germs in the future.

  • Vaccines do not cause autism. Researchers are still learning about the causes of autism spectrum disorder (ASD). Some people may worry that vaccines could play a role, but studies have not found any evidence for this.

What vaccines does your child need?

Your child’s doctor will talk with you about the types of vaccines kids need. There are a lot of vaccines for children now because vaccine science has improved a lot over time. There are many diseases we can now prevent with simple vaccines. The number of vaccines your child needs depends on the age of your child.

Does your child need the yearly flu vaccine?

Yes—all children 6 months and older should get the yearly flu vaccine, with rare exceptions. This vaccine reduces their risk of getting the flu and complications from the flu. It’s best to have it before the end of October each year. Some children will need 2 doses of vaccine.

Where will your child get vaccines?

Your child will most likely get vaccines at their doctor’s office. Your child may also be able to get vaccines at a pharmacy, school, or local vaccine clinic.

It's never too late

If you’re worried that your child has missed some vaccines, it’s not too late. Your child’s doctor can make sure your child gets up to date on their vaccines.

Healthy kids still need vaccines

Vaccines are the easiest way to reduce risk of serious illness, even in very healthy kids.

If you have questions

The best person to talk to is your child’s doctor. They can tell you why and how vaccines can help keep your child healthy now, and recommend the right schedule for your child.

Online Medical Reviewer: Jessica Gotwals RN BSN MPH
Online Medical Reviewer: Liora C Adler MD
Date Last Reviewed: 5/1/2025
© 2000-2025 The StayWell Company, LLC. All rights reserved. This information is not intended as a substitute for professional medical care. Always follow your healthcare professional's instructions.