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.
Types of Vaccines
There are a few different types of vaccines. They include:
- Attenuated (weakened) live viruses are used in some vaccines such as in the measles, mumps, and rubella (MMR) vaccine.
- Killed (inactivated) viruses or bacteria are used in some vaccines, such as in IPV.
- Toxoid vaccines contain an inactivated toxin produced by the bacterium. For example, the diphtheria and tetanus vaccines are toxoid vaccines.
- Conjugate vaccines (such as Hib) contain parts of bacteria combined with proteins.
The American Academy of Pediatrics (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.
The Vaccines Your Child Needs
The following vaccinations and schedules are recommended by the AAP. Please note that some variations are acceptable and that changes in recommendations often occur as new vaccines are developed. Your doctor will determine the best vaccinations and schedule for your child.
- Chickenpox vaccine
- Diphtheria, tetanus, and pertussis vaccine (DTaP)
- Hepatitis A vaccine (HAV)
- Hepatitis B vaccine (HBV)
- Hib vaccine
- Human papillomavirus (HPV) vaccine
- Influenza vaccine
- Measles, mumps, and rubella vaccine (MMR)
- Meningococcal/meningitis vaccine
- Pneumococcal vaccines (PCV, PPSV)
- Polio vaccine (IPV)
- Rotavirus vaccine
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. But 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.
Immunizations are one of the best means of protection against contagious diseases.
Reviewed by: Elana Pearl Ben-Joseph, MD
Date reviewed: September 2015
|Centers for Disease Control and Prevention (CDC) The CDC (the national public health institute of the United States) promotes health and quality of life by preventing and controlling disease, injury, and disability.|
|American Academy of Pediatrics (AAP) The AAP is committed to the health and well-being of infants, adolescents, and young adults. The website offers news articles and tips on health for families.|
|CDC: Vaccines & Immunizations The CDC's site has information on vaccines, including immunization schedules, recommendations, FAQs, and more.|
|Immunization Action Coalition This organization is a source of childhood, adolescent, and adult immunization information as well as hepatitis B educational materials.|
|CDC: Preteen and Teen Vaccines CDC site provides materials in English and Spanish for parents, teens, preteens, and health care providers about vaccines and the diseases they prevent.|
|CDC: Flu (Influenza) The CDC's site has up-to-date information on flu outbreaks, immunizations, symptoms, prevention, and more.|
|CDC: Travelers' Health Look up vaccination requirements for travel destinations, get updates on international outbreaks, and more, searachable by country.|
|The History of Vaccines The History of Vaccines is an informational, educational website created by The College of Physicians of Philadelphia, the oldest professional society in the United States.|
|Immunization Schedule Which vaccines does your child need to receive and when? Use this immunization schedule as a handy reference.|
|Frequently Asked Questions About Immunizations Immunizations have protected millions of children from potentially deadly diseases. Learn about immunizations and find out exactly what they do - and what they don't.|
|What Can I Do to Ease My Child's Fear of Shots? Find out what the experts have to say.|
|How Can I Comfort My Baby During Shots? Find out what the experts have to say.|
|Is the Flu Vaccine a Good Idea for Your Family? The flu vaccine is a good idea for all families. It does not cause the flu, and it helps keep kids and parents from getting sick.|
Note: All information is for educational purposes only. For specific medical advice, diagnoses, and treatment, consult your doctor.
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