Immunization Schedule for 12 Months Old

Immunization Schedule for 12 Months Old

In the United States, certain vaccines are recommended for children and adolescents starting at birth. Vaccines are usually given at various ages, according to a schedule. The schedule is designed to protect your child by:

  • Giving vaccines at the best age for your child’s immune system to develop protection.
  • Preventing disease at the age when your child is most likely to be at risk.
  • Properly spacing doses of vaccines.

The timing of immunization doses may vary. Timing and number of doses depend on when immunizations are begun and the type of vaccine that is used.

Recommended immunizations for 12 months old

Hepatitis B (HepB) vaccine

  • The third dose of a 3-dose series should be obtained at age 6–18 months.
  • The third dose should be obtained no earlier than age 24 weeks and at least 16 weeks after the first dose and 8 weeks after the second dose.
  • A fourth dose is recommended when a combination vaccine is received after the birth dose. If needed, the fourth dose should be obtained at the age of 24 weeks or later.

Diphtheria, tetanus, and pertussis (DTaP) vaccine

  • Doses should be obtained only if needed to catch up on doses your child missed in the past.

Haemophilus influenzae type b (Hib) vaccine

  • One booster dose should be obtained at age 12–15 months. Children who have certain high-risk conditions or have missed doses of Hib vaccine in the past should obtain the Hib vaccine.

Pneumococcal conjugate (PCV13) vaccine

  • The fourth dose of a 4-dose series should be obtained at age 12–15 months.
  • The fourth dose should be obtained at least 8 weeks after the third dose.

Inactivated poliovirus (IPV) vaccine

  • The third dose of a 4-dose series should be obtained at age 6–18 months.

Influenza (IIV) vaccine

  • Starting at age 6 months, all infants and children should obtain influenza vaccine every year.
  • Infants and children between the ages of 6 months and 8 years who are receiving influenza vaccine for the first time should obtain a second dose at least 4 weeks after the first dose. Thereafter, only a single annual dose is recommended.

Measles, mumps, and rubella (MMR) vaccine

  • The first dose of a 2-dose series should be obtained at age 12–15 months.

Varicella (VAR) vaccine

  • The first dose of a 2-dose series should be obtained at age 12–15 months.

Hepatitis A (HepA) vaccine

  • The first dose of a 2-dose series should be obtained at age 12–23 months.
  • The second dose of the 2-dose series should be obtained 6–18 months after the first dose.

Meningococcal conjugate (MenACWY) vaccine

  • Children who have certain high-risk conditions, are present during an outbreak, or are traveling to a country with a high rate of meningitis should obtain this vaccine.

Questions to ask your child’s health care provider:

  • Is my child up to date on his or her vaccines?
  • What should I do if my child missed a dose of a vaccine?
  • Does my child need to delay, avoid, or skip any vaccines because of his or her health history?
  • Does my child need any special vaccines or more vaccines because of his or her health history?
  • Can I have a copy of my child’s vaccine record?

Contact a health care provider if your child:

  • Has pain where the shot was given, and the pain gets worse or does not go away after a couple of days.
  • Is fussy or does not stop crying for 3 or more hours after receiving vaccines.

Get help right away if your child:

  • Has a temperature of 102.2°F (39°C) or higher.
  • Develops signs of an allergic reaction, including:
    • Itchy, red, swollen areas of skin (hives).
    • Swelling of the face, mouth, or throat.
    • Difficulty breathing or swallowing.

Summary

  • At 12 months, most children should obtain the third dose of HepB and IPV if these doses have not already been given. Your child should also obtain the fourth dose of PCV13, the first dose of MMR, the first dose of VAR, and the first dose of HepA. Depending on the specific vaccine your child receives, he or she may also need a third or fourth dose of Hib.
  • After the age of 6 months, your child should receive the annual influenza (IIV) vaccine. If your child is receiving IIV for the first time, he or she should have a second dose at least 4 weeks after the first dose.
  • Your child may need other vaccines based on his or her health history.
  • Talk with your child’s health care provider if you have any other questions about vaccines or the vaccine schedule.
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