Vaccines at 12 to 23 Months
Protect your baby against 14 potentially serious diseases before 2 years old with vaccines.
What vaccines will my baby get?
Between 12 and 23 months of age, your baby should receive vaccines to protect them from the following diseases:
- Chickenpox (Varicella) (1st dose)
- Diphtheria, tetanus, and whooping cough (pertussis) (DTaP) (4th dose)
- Haemophilus influenzae type b disease (Hib) (4th dose)
- Measles, mumps, and rubella (MMR) (1st dose)
- Polio (IPV) (3rd dose)
- Pneumococcal disease (PCV) (4th dose)
- Hepatitis A (HepA) (1st dose)
- Hepatitis B (HepB) (3rd dose between 6 months and 18 months)
- Influenza (Flu) (every year)
Get tips to prepare for your baby’s well-child visits.
Sometimes children have mild reactions from vaccines, such as pain at the injection site, a rash, or a fever. These reactions are normal and will soon go away.
- Read the Vaccine Information Sheet(s) your child’s doctor gave you to learn about side effects your child may experience.
- Offer breastmilk and liquids more often. It is normal for some children to eat less during the 24 hours after getting vaccines.
- Pay extra attention to your child for a few days. If you see something that concerns you, call your child’s doctor.
Treat mild reactions from vaccines:
- Use a cool, damp cloth to help reduce redness, soreness, and/or swelling at the injection site.
- Reduce fever with a cool sponge bath.
- Ask your child’s doctor if you can give your child a non-aspirin pain reliever.
Important developmental milestones
At 18 months, your baby is due for general developmental screening. Ask your child’s doctor about it.
Consult the immunizations and developmental milestone tracker to see milestones at ages 12, 15, 18, and 19–23 months.
CDC, American Academy of Family Physicians and American Academy of Pediatrics strongly recommend children receive all vaccines according to the recommended vaccine schedule.
- Get a list of vaccines that your child may need based on age, health conditions, and other factors.
- Learn the reasons why you should follow the vaccine schedule.