Vaccines at 4 Months
Vaccinations are safe and effective for children to receive at the recommended ages.
Vaccines your baby should get
Now that your baby is 4 months old, they’ve likely started getting their childhood vaccines and they are ready for another check-up. Routine doctor visits help ensure that your baby receives their second doses of important vaccines at the right time.
At 4 months, your baby should receive vaccines to help protect against the following diseases:
2nd dose of 5
A DTaP vaccine is the best protection from three serious diseases: diphtheria, tetanus, and whooping cough (pertussis). All three of these diseases can be deadly for people of any age, and whooping cough is especially dangerous for babies.
See Related: DTaP vaccination
2nd dose of 3 or 4
Hib disease is a serious illness caused by the bacteria Haemophilus influenzae type b (Hib). Babies and children younger than 5 years old are most at risk for Hib disease. It can cause lifelong disability and be deadly. Doctors recommend that your child get three or four doses of the Hib vaccine (depending on the brand).
See Related: Hib vaccination
2nd dose of 4
Pneumococcal disease can cause potentially serious and even deadly infections. The pneumococcal conjugate vaccine protects against the bacteria that cause pneumococcal disease.
See Related: Pneumococcal vaccination
2nd dose of 4
Polio is a disabling and life-threatening disease caused by poliovirus, which can infect the spinal cord and cause paralysis. It most often sickens children younger than 5 years old. Polio was eliminated in the United States with vaccination, and continued use of polio vaccine has kept this country polio-free.
See Related: Polio vaccination
2nd dose of 2 or 3
Rotavirus can be very dangerous, even deadly for babies and young children. Doctors recommend that your child get two or three doses of the Rotavirus vaccine (depending on the brand).
See Related: Rotavirus vaccination
Additional protection for your baby during RSV season
Babies who are 3 to 4 months old should receive an RSV immunization (if not previously received) to protect them against severe RSV disease.
Respiratory Syncytial Virus (RSV)
RSV is a common cause of severe respiratory illness in infants and young children. Those infected with RSV can have difficulty breathing and eating and sometimes may need respiratory support or hydration in the hospital. An RSV immunization uses monoclonal antibodies to protect infants and young children from severe RSV disease. This immunization gives your baby’s body extra help to fight an RSV infection.
Infants younger than 8 months old during RSV season (typically fall through spring) should get a one-dose RSV immunization to protect them against RSV. This dose should be given shortly before or during the RSV season.
Care for your child after vaccinations
Call 911 if you think your child might be having a severe allergic reaction after leaving the vaccination site.
Give your child extra care and attention
Pay extra attention to your baby for a few days. If you see something that concerns you, call your baby’s doctor.
- Read the Vaccine Information Sheet(s) your baby’s doctor gave you to learn about side effects your baby may experience.
- Offer breastmilk or formula more often. It is normal for some babies to eat less during the 24 hours after getting vaccines.
Treat mild reactions
Sometimes children have mild reactions from vaccines, such as pain at the injection site or a rash. These reactions, also called side effects, are normal and will soon go away.
- 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 baby’s doctor if you can give your baby a non-aspirin pain reliever.