The Moderna COVID-19 Vaccine is administered as a 2-dose series, 1 month apart, into the muscle and it may not protect everyone.

In an ongoing clinical trial, the Moderna COVID-19 Vaccine has been shown to prevent COVID-19 following 2 doses given 1 month apart. The duration of protection against COVID-19 is 209 days or 7 months.

WHO SHOULD NOT GET THE MODERNA COVID-19 VACCINE?

You should not get the Moderna COVID-19 Vaccine if you:

• had a severe allergic reaction after a previous dose of this vaccine
• had a severe allergic reaction to any ingredient of this vaccine

WHAT SHOULD YOU MENTION TO YOUR VACCINATION PROVIDER BEFORE YOU GET THE MODERNA COVID-19 VACCINE?

Tell your vaccination provider about all of your medical conditions, including if you:

• have any allergies
• have had myocarditis (inflammation of the heart muscle) or pericarditis (inflammation of the lining outside the heart)
• have a fever
• have a bleeding disorder or are on a blood thinner
• are immunocompromised or are on a medicine that affects your immune system
• are pregnant or plan to become pregnant
• are breastfeeding
• have received another COVID-19 vaccine

This Fact Sheet may have been updated. For the most recent Fact Sheet, please visit www.modernatx.com/covid19vaccine-eua.

WHAT ARE THE RISKS OF THE MODERNA COVID-19 VACCINE?

There is a remote chance that the Moderna COVID-19 Vaccine could cause a severe allergic reaction. A severe allergic reaction would usually occur within a few minutes to one hour after getting a dose of the Moderna COVID-19 Vaccine. For this reason, your vaccination provider may ask you to stay at the place where you received your vaccine for monitoring after vaccination. Signs of a severe allergic reaction can include:

• Difficulty breathing
• Swelling of your face and throat
• A fast heartbeat
• A bad rash all over your body
• Dizziness and weakness

Myocarditis (inflammation of the heart muscle) and pericarditis (inflammation of the lining outside the heart) have occurred in some people who have received the Moderna COVID-19 Vaccine. In most of these people, symptoms began within a few days following receipt of the second dose of the Moderna COVID-19 Vaccine. The chance of having this occur is very low.

You should seek medical attention right away if you have any of the following symptoms after receiving the Moderna COVID-19 Vaccine:

• Chest pain
• Shortness of breath
• Feelings of having a fast-beating, fluttering, or pounding heart

Side effects that have been reported in a clinical trial with the Moderna COVID-19 Vaccine include:

• Injection site reactions: pain, tenderness and swelling of the lymph nodes in the same arm of the injection, swelling (hardness), and redness
• General side effects: fatigue, headache, muscle pain, joint pain, chills, nausea and vomiting, and fever

Side effects that have been reported during post-authorization use of the Moderna COVID-19
Vaccine include:

• Severe allergic reactions
• Myocarditis (inflammation of the heart muscle)
• Pericarditis (inflammation of the lining outside the heart)

These may not be all the possible side effects of the Moderna COVID-19 Vaccine. Serious and unexpected side effects may occur. The Moderna COVID-19 Vaccine is still being studied in clinical trials.

If you experience a severe allergic reaction, call 1669, or go to the nearest hospital.

Call the vaccination provider or your healthcare provider if you have any side effects that bother you or do not go away.

CAN I RECEIVE THE MODERNA COVID-19 VACCINE WITH OTHER VACCINES? There is no information on the use of the Moderna COVID-19 Vaccine with other vaccines.

WHAT IF I AM PREGNANT OR BREASTFEEDING?

There is information on clinical studies regarding the vaccination of COVID-19. In pregnant women in the United States, CDC recommends that pregnant people to receive the COVID-19 vaccine can be vaccinated.

Protecting mothers is the priority with COVID-19 vaccination because of the risk the disease poses in pregnancy. Studies found a greater risk of preterm birth, preeclampsia (a dangerously high blood pressure condition in pregnancy), admission to the ICU, and death in pregnant women with COVID-19 than pregnant women without an infection. Both mothers and newborns were more likely to have severe complications of any kind in pregnancies with COVID-19. Therefore, 

Based on how the COCID-19 vaccines work in lactating people, COVID-19 vaccines are thought not to be a risk to these people or their breastfeeding babies.

Therefore, lactating people can receive a COVID-19 vaccine. Recent reports have shown that breastfeeding people who have received COVID-19 mRNA vaccines have antibodies in their breastmilk, which could help protect their babies. More data are needed to determine what protection these antibodies may provide to the baby.

Reviewed by
Asst.Prof. Mondej Sookpranee
Infectious Control Consultant
The Doctor Profile Click

Information as of July 2, 2021

Reference:

COVID-19 Vaccines While Pregnant or Breastfeeding (cdc.gov)
Preliminary Findings of mRNA Covid-19 Vaccine Safety in Pregnant Persons | NEJM
Press Briefing by White House COVID-19 Response Team and Public Health Officials | The White House
www.modernatx.com/covid19vaccine-eua.