Your Child's Immunizations

Your Child's Immunizations
The Nemours Foundation

Babies are born with protection against certain diseases because antibodies from their mothers were passed to them through the placenta. After birth, breastfed babies get the continued benefits of additional antibodies in breast milk. But in both cases, the protection is temporary.

Immunization (vaccination) is a way of creating immunity to certain diseases by using small amounts of a killed or weakened microorganism that causes the particular disease.

Microorganisms can be viruses (such as the measles virus) or they can be bacteria (such as pneumococcus). Vaccines stimulate the immune system to react as if there were a real infection — it fends off the "infection" and remembers the organism so that it can fight it quickly should it enter the body later.

Some parents may hesitate to have their kids vaccinated because they're worried that the children will have serious reactions or may get the illness the vaccine is supposed to prevent. Because the components of vaccines are weakened or killed — and in some cases, only parts of the microorganism are used — they're unlikely to cause any serious illness. Some vaccines may cause mild reactions, such as soreness where the shot was given or fever, but serious reactions are rare.

The risks of vaccinations are small compared with the health risks associated with the diseases they're intended to prevent.

The following vaccinations and schedules are recommended by the American Academy of Pediatrics (AAP). Please note that some variations are acceptable and that changes in recommendations often occur as new vaccines are developed.

The AAP recommends that kids get combination vaccines (rather than single vaccines) whenever possible. Many vaccines are offered in combination to help reduce the number of shots a child receives.

Your doctor will determine the best vaccinations and schedule for your child.

Recommended vaccinations:

Hepatitis B

Hepatitis B virus (HBV) affects the liver. Those who are infected can become lifelong carriers of the virus and may develop long-term problems such as cirrhosis (liver disease) or cancer of the liver.

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