On this page · 8 sections
Comirnaty (2026-2027) PF (cvx 309) (2026-2027)
Generic name: COVID-19 (12y+) vaccine, Comirnaty (2026-2027)
Brand names: Comirnaty (2026-2027) PF (cvx 309)
What is the COVID-19 vaccine?
COVID-19 is a serious illness caused by a coronavirus called SARS-CoV-2 (Severe Acute Respiratory Syndrome Coronavirus 2). COVID-19 spreads from person to person through the air.
COVID-19 can impact your lungs or other organs. Symptoms can be mild or severe and may include fever, chills, cough, sore throat, shortness of breath, tiredness, body aches, headache, loss of taste or smell, runny or stuffy nose, nausea, vomiting, or diarrhea.
Comirnaty vaccine is used to prevent COVID-19 in people who have never been vaccinated before or who have already received a COVID-19 vaccine.
Comirnaty vaccine is used to prevent COVID-19 in people:
- age 65 and older; or
- 12 years through 64 years of age and at high risk for severe COVID-19.
COVID-19 vaccine does not contain coronavirus and cannot give you COVID-19. This vaccine will not treat an active COVID-19 infection.
Like any vaccine, COVID-19 vaccine may not provide protection in every person.
This section was rewritten for readability and reviewed for meaning.
How is this vaccine given?
Read all vaccine information sheets provided to you.
Comirnaty COVID-19 vaccine is given as an injection into a muscle.
Comirnaty COVID-19 vaccine for people at least 12 years old is given:
- to unvaccinated individuals: a single dose of Comirnaty COVID-19 vaccine.
- to people who have already received a dose of any COVID-19 vaccine: a single dose of Comirnaty COVID-19 vaccine is given at least 2 months after the last dose of any COVID-19 vaccine.
The doctor or vaccination provider will decide if an immunocompromised person needs extra doses.
Keep using infection control methods when you are in public or around others who may not have been vaccinated. This includes social distancing, hand-washing, wearing protective face coverings, disinfecting surfaces you touch often, and not sharing personal items with others.
Getting a COVID-19 vaccine will not make you test positive on a coronavirus test. However, once your body develops immunity to COVID-19, you might test positive on an antibody test (a test to check for immunity in the body from previous exposure to coronavirus).
It is not known how long this vaccine will protect you from COVID-19 infection. It also is not known how long immunity lasts in a person who has been infected with and recovered from COVID-19. The COVID-19 vaccine is still being studied, and all of its risks are not yet known. Updated federal public health recommendations can be found at https://www.cdc.gov/covid/index.html
This section was rewritten for readability and reviewed for meaning.
Warnings
Getting infected with COVID-19 may pose a greater risk to your health than getting this vaccine.
This section was rewritten for readability and reviewed for meaning.
Before taking this medicine
You should not receive this vaccine if you have ever had a severe allergic reaction to Comirnaty, Pfizer COVID-19 vaccine, or if you have or have ever had:
- an allergy to any of the ingredients of this vaccine.
If you are infected with COVID-19, are waiting for test results, or have been exposed to someone with COVID-19: you may not be able to receive this vaccine until you have no symptoms and/or your required quarantine period has ended. Receiving this vaccine will not reduce your ability to spread COVID-19 to others if you are infected but have no symptoms.
Ask your doctor if you are unsure about any COVID-19 treatments you have received.
Tell your vaccination provider if you:
- have any allergies;
- have had inflammation in or around your heart (myocarditis or pericarditis);
- have a fever;
- have bleeding problems or are using a blood thinner;
- have a weak immune system due to a disease or certain medications (this vaccine may not work as well if you are immunosuppressed);
- are pregnant, plan to become pregnant, or are breastfeeding;
- have received any other COVID-19 vaccine or if you are scheduled to receive a vaccine; or
- have fainted after receiving an injection.
This section was rewritten for readability and reviewed for meaning.
This vaccine side effects
Get emergency medical help if you have signs of an allergic reaction: hives, difficulty breathing, swelling of your face, lips, tongue, or throat.
The vaccination provider may want to monitor you for a short time after the injection to ensure you do not have an allergic reaction or faint. You will be treated quickly if a reaction occurs right after receiving the vaccine.
You should not receive this vaccine if any dose of COVID-19 vaccine caused an allergic reaction. The doctor or vaccination provider will decide if you can safely receive this vaccine.
Not all possible side effects are known. Getting infected with COVID-19 may be much more dangerous to your health than receiving this vaccine.
Some people (most commonly males aged 12 to 24 years) who received this vaccine had inflammation of the heart muscle or the lining around the heart after vaccination, typically within the first week. Seek medical attention right away if you experience the following symptoms, especially within the first two weeks:
- chest pain;
- shortness of breath; or
- fast or pounding heartbeats, fluttering in your chest.
Common side effects of Comirnaty (2026-2027) PF (cvx 309) may include:
- fever, chills, feeling tired;
- nausea, vomiting, diarrhea, loss of appetite;
- dizziness, headache, muscle pain, joint pain;
- pain, swelling, redness, or arm pain where the injection was given; or
- swelling or tenderness under the arm where the injection was given.
This is not a complete list of side effects and others may occur. Call your doctor for medical advice about side effects. You may report vaccine side effects to the US Department of Health and Human Services at 1-800-822-7967.
You may also use a smartphone-based program called V-safe to communicate with the Centers for Disease Control and Prevention (CDC) about any health problems you have after receiving a COVID-19 vaccine: www.cdc.gov/vsafe
This section was rewritten for readability and reviewed for meaning.
What happens if I miss a dose?
Contact your vaccination provider or health department if you miss a dose.
This section was rewritten for readability and reviewed for meaning.
What happens if I overdose?
An overdose of this vaccine is unlikely to happen.
Do not receive other vaccines without first getting medical advice.
This section was rewritten for readability and reviewed for meaning.
What other drugs will affect this vaccine?
Before getting this vaccine, inform your vaccination provider about all other vaccines you have received. Other medications may impact this vaccine, including prescription and over-the-counter medicines, vitamins, and herbal products. Let your doctor know about all other medicines you are using.
This section was rewritten for readability and reviewed for meaning.
Related medicines
Content is provided for education and is not medical advice. See our medical disclaimer.