
A 9-month check-up for a baby will include a physical examination to check the child's growth and development, as well as guidance on nutrition, sleep, safety, and other important topics. While there are usually no vaccinations scheduled between 7 and 11 months of age, a 9-month check-up may include a hepatitis B shot, depending on the child's vaccination history. Other vaccinations that may be administered before the age of one include rotavirus (oral), pneumococcal conjugate vaccine (PCV20), diphtheria, tetanus, pertussis (DTaP), inactivated polio vaccine (IPV), and influenza.
| Characteristics | Values |
|---|---|
| Vaccines at 9-month check-up | Rotavirus (oral); Pneumococcal Conjugate Vaccine (PCV20); Diphtheria, Tetanus, Pertussis (DTaP); Inactivated Polio Vaccine (IPV); Hepatitis B (HBV); Influenza |
| Vaccines administered earlier | DTaP vaccine (protection against diphtheria, tetanus, and whooping cough); Hib vaccine (protection against Haemophilus influenzae type b); Hepatitis B vaccine |
| Vaccines administered later | Flu vaccine (recommended every flu season starting at 6 months of age); COVID-19 vaccine (recommended at regular intervals starting at 6 months of age); HPV vaccine (recommended at ages 11-12 years) |
| Other aspects of 9-month check-up | Physical examination; guidance on nutrition, sleep, and safety; developmental/behavioral screening; hearing test |
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What You'll Learn

Hepatitis B vaccination
Hepatitis B is an infectious and potentially serious disease that can cause liver damage and liver cancer. There is currently no cure for hepatitis B, but the hepatitis B vaccine is the best way to prevent it.
The World Health Organization recommends that all infants receive the first dose of the hepatitis B vaccine within 24 hours of birth. This is often referred to as the "birth dose". The vaccine series is then completed with additional shots at 1 month and 6 months of age. It is crucial to follow the infant vaccine schedule (birth through 12 months) to protect your baby from many different diseases that could cause serious illness or even death.
If a newborn's mother does not have the hepatitis B virus in her blood, the baby can receive the HepB vaccine within 24 hours of birth. If the baby has a low birth weight (less than 2000 grams or 4 pounds, 7 ounces), they will need to get the first dose at 1 month of age or when they are discharged from the hospital, whichever comes first. This lower birth weight means they will require a total of 4 doses of the vaccine, with the final dose administered at 6 months of age.
For infants with a birth weight of 2000 grams or more, it is recommended to administer the HepB vaccine within 12 hours of birth. It is important to determine the mother's HBsAg status as soon as possible in this case. The hepatitis B vaccine is generally given as a three-dose series, with shots administered at 0, 1, and 6 months of age.
It is worth noting that alternative schedules may be considered, and a third dose at 6 months is necessary for maximum, long-term protection. Completing the hepatitis B vaccine series as early as possible, preferably beginning at birth, will ensure protection against hepatitis B and lower the lifetime risk of liver cancer.
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Rotavirus (oral)
Rotavirus is a common infection that spreads easily among infants and young children. It can cause high fever, vomiting, and diarrhea, which can lead to severe dehydration, hospitalization, and even death in some cases. The Rotavirus vaccine is an oral vaccine that helps prevent this infection in children. It is given by putting drops into the infant's mouth.
There are two types of Rotavirus vaccines available for infants in the United States: RotaTeq® (RV5) and Rotarix® (RV1). RotaTeq is administered in three doses, while Rotarix is given in two doses. The first dose of either vaccine should be given before the child turns 15 weeks old, and all doses should be completed before they turn 8 months old. The specific dosage and timing depend on the brand of vaccine and the age of the child. It is important to follow the recommended schedule to ensure the best protection against the disease.
The Rotavirus vaccine is generally safe and effective, with mild side effects such as irritability, mild diarrhea, and vomiting. However, in rare cases, there is a small risk of intussusception, a rare type of bowel blockage where the bowel folds into itself like a telescope. This usually occurs within a week after the first or second dose and requires prompt medical attention.
Before administering the Rotavirus vaccine, it is important to consult with a healthcare provider. Certain infants may need to wait or avoid the vaccine, such as those with severe allergies, moderate to severe diarrhea or vomiting, or a history of intussusception. The healthcare provider will assess the child's medical history and provide recommendations based on their expertise.
The Rotavirus vaccine can be safely given during the same doctor's visit as other routine vaccines such as DTaP, Hib, polio, hepatitis B, and pneumococcal conjugate vaccines. It is important to follow the recommended vaccination schedule to protect infants and young children from harmful diseases.
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Pneumococcal Conjugate Vaccine (PCV20)
The Pneumococcal Conjugate Vaccine (PCV20) is given as a shot into one of the muscles and is generally recommended for infants and young children. The recommended dosage for this age group is four doses at ages 2 months, 4 months, 6 months, and 12–15 months. Children 24–59 months of age who did not receive the recommended doses as infants may also receive the pneumococcal conjugate vaccine. It is important to note that this vaccine should be administered only by or under the supervision of a doctor.
The most common side effects of PCV20 in individuals 2, 4, 6, and 12 through 15 months of age vaccinated with a 4-dose schedule include irritability, pain at the injection site, drowsiness, decreased appetite, injection site redness, injection site swelling, and fever. These side effects typically occur in more than 10% of cases. Other less common side effects that may require medical attention include a large, hive-like swelling on the face, eyelids, lips, tongue, throat, hands, legs, feet, or sex organs, and puffiness or swelling of the eyelids or around the eyes, face, lips, or tongue.
It is important to consult with a healthcare provider to determine if PCV20 is suitable for your child, especially if they have any underlying medical conditions or allergies. Additionally, individuals with weakened immune systems may experience a lower immune response to the vaccine. The healthcare provider will assess the benefits and risks of the vaccine and advise accordingly.
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Influenza vaccination
There are usually no vaccinations scheduled between 7 and 11 months of age. However, if your baby has missed an earlier vaccination, this is a good time to "catch up". Babies aged 6 months and older should receive a flu vaccination every flu season. By following the recommended schedule and fully immunizing your child by the time they are 2 years old, your child should be protected against 16 vaccine-preventable diseases.
The flu vaccine is recommended at regular intervals starting at 6 months of age and continuing throughout childhood and adolescence. This is because infants are vulnerable to many different diseases that could cause serious illness or even death. Following the infant vaccine schedule (birth through 12 months) is crucial for protecting your baby.
The CDC recommends that children receive a flu vaccination every flu season. This is usually given as a yearly vaccination for children aged 7 to 10 years old. However, it is important to note that the flu vaccine is different from the influenza vaccine, which is a separate vaccination with its own schedule.
The influenza vaccination is recommended for children aged 6 months and older. This vaccine is given as a 3-dose series with the first dose administered at 0 months, the second dose administered 1-2 months later, and the third dose administered 6 months after the initial dose. The minimum interval between the first and second doses is 4 weeks, while the minimum interval between the second and third doses is 12 weeks. If your child has already received one dose of the influenza vaccine at 12 months or older, they should receive their second dose at least 6 months after the first.
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Catching up on missed vaccinations
It is important to follow the childhood vaccine schedule to ensure your child is protected from harmful diseases. Most childhood vaccines are given by the age of two, with a good chunk of these occurring during the first year of life. However, if your child has missed any of their vaccinations, it is important to catch up as soon as possible.
The first step is to find out which vaccinations your child has missed. You can do this by calling your child's pediatrician and asking which vaccinations they have already received. When you schedule an appointment, let the doctor know that you are ready to start the vaccinations immediately. If your child has missed multiple immunizations, the doctor will be able to advise you on which vaccines to prioritize.
The next step is to consult the childhood immunization catch-up schedule provided by the Centers for Disease Control and Prevention (CDC). This schedule will help you determine the recommended interval for catch-up vaccinations. The CDC has developed guidance to assist healthcare providers in interpreting the schedule and determining the appropriate catch-up plan for your child's age. It is important to note that a vaccine series does not need to be restarted, even if a significant amount of time has passed between doses.
In addition to the CDC schedule, you can refer to the general guidelines for administering missed vaccinations. The timing of the catch-up vaccination will depend on the type of immunization, your child's age, and the amount of time that has passed since the previous dose. The sooner your child receives the recommended vaccinations, the better protected they will be.
Financial reasons should not be a barrier to accessing vaccinations. If you are uninsured or underinsured, you can inquire about the Vaccines for Children (VFC) Program, which helps secure vaccines for children in such circumstances. Ask your child's pediatrician for more information on this program.
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Frequently asked questions
At the 9-month check-up, your baby will receive the Rotavirus (oral), Pneumococcal Conjugate Vaccine (PCV20), Diphtheria, Tetanus, Pertussis (DTaP), Inactivated Polio Vaccine (IPV), Hepatitis B (HBV), and Influenza vaccines.
The 9-month check-up includes a complete physical examination, including weight, length, and head circumference measurements. The doctor will also check your baby's growth and development and offer guidance on nutrition, sleep, safety, and other important topics.
Yes, there are several vaccines given to infants before they reach 9 months of age. Starting at 1-2 months of age, babies receive vaccines for diphtheria, tetanus, and pertussis (DTaP), as well as hepatitis B. From 6 months onwards, babies should receive the flu vaccine every flu season.
Yes, there are vaccines given to children after the 9-month check-up. By following the recommended schedule, your child should be fully immunized by 2 years of age, protected against 16 vaccine-preventable diseases.











































