
Vaccine FAQs

Last Updated: November 3, 2025
With several COVID-19 vaccines available, you probably have some questions about what to expect when vaccinating your children. To help you, we’ve compiled some FAQs about the COVID-19 vaccines.
COVID-19 Vaccine Frequently Asked Questions
Children's National Hospital Vaccinations
Is Children’s National offering the COVID-19 vaccine?
Families can schedule an appointment for a COVID-19 vaccine in our primary care clinics.
Who is eligible for the COVID-19 vaccine?
- Children 6 to 23 months old should receive the current COVID-19 vaccine. The number of doses needed depends on if the child has already received a COVID-19 vaccine
- Children 24 months to 18 years old who are at high risk for severe COVID-19 infections should receive one dose of the current COVID-19 vaccine
- Children 24 months to 18 years old whose parents and guardians desire protection with a COVID-19 vaccine should also receive one dose of the current COVID-19 vaccine
Can my dependent child get the vaccine without a parent or guardian present?
No, one parent or guardian must be on-site to consent to their dependent child below the age of 18 getting the vaccine. Parental consent for dependent children is required at Children's National. Telephone or electronic consent is not permitted – the parent or guardian must be present at the vaccine appointment.
What makes a child high risk for severe COVID-19 infections?
The following individuals are considered high risk for severe COVID-19 infections:
- Individuals with medical conditions that make them high risk for severe disease (see information below)
- Individuals who have never received a COVID-19 vaccine
- Individuals who live in long-term care facilities or other settings in which residents live in close quarters
- Individuals with household members who are at high risk for severe COVID-19 infections
- Lung or breathing disorders
- Asthma or reactive airway disease
- Chronic lung disease of prematurity
- Children who have a tracheostomy or need a ventilator
- Heart disease
- Congenital heart disease
- Gastrointestinal disorders
- Children who need a feeding tube
- Liver disease
- Chronic liver disease
- Hematologic disease
- Sickle cell disease
- Metabolic disorders
- Diabetes
- Obesity
- BMI greater than or equal to the 95th percentile in children
- Neurologic and neurodevelopmental conditions
- Cerebral palsy
- Seizures
- Intellectual development disorder
- Limited mobility (such as needing a wheelchair)
- Immunosuppressive conditions
- Children receiving therapy that causes immunosuppression
- Primary immunodeficiency
- HIV infection
- Children receiving transplants
- Rheumatologic, autoimmune disease
- Lupus
- Juvenile idiopathic arthritis (JIA)
- Disabilities
- ADHD
- Down syndrome
- Learning disabilities
- Mobility disorders
- Movement disorders
- Cancer
- Chronic kidney disease
The American Academy of Pediatrics Committee on Infectious Diseases. Recommendations for COVID-19 Vaccines in Infants, Children, and Adolescents: Policy Statement. Pediatrics. 2025 Aug 19. doi: 10.1542/peds.2025-073924. Children's National Hospital Vaccine Implementation Subcommittee of the Pharmacy and Therapeutics Committee. COVID-19 2025-2026 Vaccine Clinical Guidance. September 2025.
Can other members of my family get a vaccine if my child qualifies for one?
Yes, we are prioritizing children ages 6 months and up with one or more qualifying underlying health conditions, but parents/caregivers and older siblings can also request vaccination from Children’s National Hospital. There also is ample supply of vaccines for adults in the community at public health facilities, retail drug stores (including the Walgreens pharmacy in the atrium of the hospital) and primary care doctors. Families are encouraged to find the most convenient and timely option for themselves and their children.
How should I prepare my child to receive the vaccine?
Make sure your child has eaten well and is hydrated prior to receiving the vaccine. The appointment itself should take only about 20 minutes. We encourage parents to discuss health concerns with their primary care physician prior to coming in for the vaccine. Questions about side effects, allergies and other topics are best answered by the child’s pediatrician.
COVID Vaccines for Ages 6 Months to 18 Years
Can my child receive other vaccines at the same time as the COVID-19 shot?
Yes – children can receive routine vaccines at the same time as the COVID-19 vaccine. Talk with your child’s pediatrician about the vaccines that your child needs and make a plan about how she or he will receive all needed vaccines.
How many doses of COVID-19 vaccine dose my child need to be considered "up to date?"
Most children 24 months and older need only one dose of the current COVID-19 shot.
At Children’s National, we are continuing to follow the vaccine schedule recommended by the American Academy of Pediatrics.
What are the vaccine’s side effects, and how can I treat them?
Common side effects from the COVID-19 vaccine include:
- Pain, redness or swelling at the injection site
- Tiredness
- Headache
- Muscle pain
- Chills
- Fever
- Nausea/vomiting
Most of the time, these side effects will go away in a few days.
Pain at the injection site (where the shot went into the arm) is also a common reaction. If your child feels pain or discomfort in the spot where they got their COVID‑19 vaccine, try placing a cool, wet washcloth on the area. You can also give them pain or fever-reducing medications following vaccination. It is not recommended that you give your child any over-the-counter pain reliever before vaccination to prevent side effects.
Should I call my child’s pediatrician about any COVID 19 vaccine side effects?
Contact your child’s pediatrician or health care provider if:
- The redness or pain at the injection site gets worse after 24 hours
- Their side effects worry you, or do not go away after a few days
Also seek care right away if your child experiences chest pain, shortness of breath, or a fast or irregular heartbeat, which could be signs of myocarditis or pericarditis.
These reactions are extremely rare.
Can my child receive other vaccines at the same time as the COVID-19 shot?
Should I get my child vaccinated if they’ve already had COVID-19?
Even if your child already had COVID-19, they should still receive the vaccine once they have recovered from the illness if they are eligible. While there is some evidence that people who have been infected with COVID-19 develop immunity for several months after infection, it is unclear if that immunity is fully protective and how long any protection may last. It's recommended that most individuals delay getting their COVID-19 vaccine for three months after an acute COVID-19 infection, some high-risk individuals may want to get vaccinated sooner. A vaccine will add to your child’s immunity to the virus and protect your child from getting the virus again.
My child had multisystem inflammatory syndrome in children (MIS-C). Can they still get the vaccine?
Patients who had MIS-C were not included in mRNA (Pfizer and Moderna) COVID-19 vaccine trials in children. However, consensus among the healthcare field is that it is safe and beneficial for children with a history of MIS-C living in areas with high risk for exposure/transmission to receive the vaccine if they have clinically recovered (especially their heart function) and it's been at least 90 days since their diagnosis. If you have specific concerns about your child's individual history, we recommend reaching out to their doctor/specialist for best recommendations.
Pregnancy and the COVID-19 Vaccine
Is the COVID-19 vaccine safe for pregnant women?
Yes. The American College of Obstetricians and Gynecologists, the Society for Maternal-Fetal Medicine, and the American Association of Family Physicians recommend COVID-19 vaccination for all pregnant women during any trimester.
Because people who are pregnant or recently pregnant are more likely to get severely ill with COVID-19 compared with people who are not pregnant, getting a COVID-19 vaccine can help protect them from severe illness from COVID-19. Vaccination during pregnancy also builds antibodies that can protect the baby.
If I'm pregnant should I get a booster COVID-19 vaccine?
Is it safe to breastfeed my baby after getting the COVID-19 vaccine?
What happens if I get pregnant after receiving my first COVID-19 vaccine?
I've heard the COVID-19 vaccine can cause miscarriage. Is this true?
I’ve heard the COVID-19 vaccine can cause infertility. Is this true?
Does getting the COVID-19 vaccine protect my breastfed child?
Can I give my child COVID-19 through the vaccine?
General Vaccine Information
Who is eligible to receive the COVID-19 vaccine in the United States?
COVID-19 vaccines are now approved primarily for adults aged 65 and older, and individuals 6 months and older with at least one health condition that puts them at higher risk for severe illness. According to the FDA, examples of high-risk conditions include (but are not limited to):
- Asthma
- Diabetes
- Cancer
- Obesity
- Pregnancy
If you have questions about whether your child is eligible for the vaccine, please reach out to your child’s healthcare provider.
View the AAP website for more information about the vaccine.
Do the vaccines have any short-term side effects?
The COVID-19 vaccines are safe and effective. Millions of people in the United States have received these vaccines under the most intense safety monitoring in U.S. history.
You may have some side effects, which are normal signs that your body is building protection. These side effects may affect your ability to do daily activities, but they should go away in a few days. Some people have no side effects.
Are there any long-term side effects for the Pfizer COVID-19 vaccine?
Some people have expressed concerns that the Pfizer vaccine may have long-term side effects. Although it is always important to consider the risks and benefits of any medical choice we make, there is no vaccine that has caused late-onset side effects (beginning more than 2 months after receiving the vaccine). All vaccines are made to disintegrate safely in your body. Vaccines introduce a non-harmful ingredient that looks like the true virus or bacteria, allowing your body to build antibodies against the virus/bacteria without getting infected.
For the Pfizer vaccine, the non-harmful ingredient is mRNA. This acts like a recipe that our body uses to build protein. This protein is harmless but does look exactly like the protein on the outside of the novel COVID-19, so our antibodies can be prepared if it sees the real virus. mRNA, however, is literally used up as it is read by the body. In fact, the end of the mRNA recipe has instructions to break down the mRNA and stop the production of the protein.
What should parents look for after their child receives the vaccine?
Can my child stop wearing a mask after they receive vaccine?

Which COVID-19 Vaccine is Best for Your Young Child?
Now that both the COVID-19 vaccines have been approved for children 6 months and older, you may be wondering which vaccine to get for your child. Read more to learn the differences between the vaccines and learn which one is best for your child.
