Frequently Asked Questions about COVID-19 Vaccination
Below are answers to commonly asked questions about COVID-19 vaccination.
What if I lost my vaccination card?
If you have lost your vaccination card or don’t have a copy, contact your vaccination provider site where you received your vaccine to access your vaccination record. If you are unable to contact your vaccination provider, you can email firstname.lastname@example.org for assistance. Please include your full name in your email.
If I have already had COVID-19 and recovered, do I still need to get vaccinated with a COVID-19 vaccine?
Yes, you should be vaccinated regardless of whether you already had COVID-19. That’s because experts do not yet know how long you are protected from getting sick again after recovering from COVID-19. Even if you have already recovered from COVID-19, it is possible—although rare—that you could be infected with the virus that causes COVID-19 again. Studies have shown that vaccination provides a strong boost in protection in people who have recovered from COVID-19. Learn more about why getting vaccinated is a safer way to build protection than getting infected.
If you were treated for COVID-19 with monoclonal antibodies or convalescent plasma, you should wait 90 days before getting a COVID-19 vaccine. Talk to your doctor if you are unsure what treatments you received or if you have more questions about getting a COVID-19 vaccine.
If you or your child has a history of multisystem inflammatory syndrome in adults or children (MIS-A or MIS-C), consider delaying vaccination until you or your child have recovered from being sick and for 90 days after the date of diagnosis of MIS-A or MIS-C. Learn more about the clinical considerations people with a history of multisystem MIS-C or MIS-A.
Experts are still learning more about how long vaccines protect against COVID-19. CDC will keep the public informed as new evidence becomes available.
Is it safe for my child to get a COVID-19 vaccine?
Yes. Studies show that COVID-19 vaccines are safe and effective. Like adults, children may have some side effects after COVID-19 vaccination. These side effects may affect their ability to do daily activities, but they should go away in a few days. Children 12 years and older are now eligible to get vaccinated against COVID-19. COVID-19 vaccines have been used under the most intensive safety monitoring in U.S. history, including studies in children 12 years and older. Your child cannot get COVID-19 from any COVID-19 vaccine.
Why should my child get vaccinated against COVID-19?
COVID-19 vaccination can help protect your child from getting COVID-19. Although fewer children have been sick with COVID-19 compared to adults, children can be infected with the virus that causes COVID-19, can get sick from COVID-19, and can spread the virus that causes COVID-19 to others. Getting your child vaccinated helps to protect your child and your family. Vaccination is now recommended for everyone 12 years and older. Currently, the Pfizer-BioNTech COVID-19 Vaccine is the only one available to children 12 years and older.
What are the ingredients in COVID-19 vaccines?
Vaccine ingredients can vary by manufacturer. To learn more about the ingredients in authorized COVID-19 vaccines, see
- Information about the Pfizer-BioNTech COVID-19 Vaccine
- Information about the Moderna COVID-19 Vaccine
- Information about the Johnson & Johnson’s Janssen COVID-19 Vaccine
- Ingredients Included in COVID-19 Vaccines
Do I need to wear a mask and avoid close contact with others if I am fully vaccinated?
The current CDC guidance recommends everyone aged two and older should wear a mask while indoors, regardless of vaccination status. After you are fully vaccinated for COVID-19 you can resume many activities without wearing a mask or staying 6 feet apart, except:
- if you are indoors in public and you are in an area of substantial or high transmission.
- or where required by federal, state, local, tribal, or territorial laws, rules, and regulations, including local business and workplace guidance.
Can I choose which COVID-19 vaccine I get?
Yes. All currently authorized and recommended COVID-19 vaccines are safe and effective, and CDC does not recommend one vaccine over another. The most important decision is to get a COVID-19 vaccination as soon as possible. Widespread vaccination is a critical tool to help stop the pandemic.
People should be aware that a risk of a rare condition called thrombosis with thrombocytopenia syndrome (TTS) has been reported following vaccination with the J&J/Janssen COVID-19 Vaccine. TTS is a serious condition that involves blood clots with low platelet counts. This problem is rare, and most reports were in women between 18 and 49 years old. For women 50 years and older and men of any age, this problem is even more rare. There are other COVID-19 vaccine options available for which this risk has not been seen (Pfizer-BioNTech, Moderna).
Learn more about your COVID-19 vaccination, including how to find a vaccination location, what to expect at your appointment, and more.
If I am pregnant, can I get a COVID-19 vaccine?
Yes, COVID-19 vaccination is recommended for all people 12 years and older, including people who are pregnant, breastfeeding, trying to get pregnant now, or might become pregnant in the future. You might want to have a conversation with your healthcare provider about COVID-19 vaccination. While such a conversation might be helpful, it is not required before vaccination. Learn more about vaccination considerations for people who are pregnant or breastfeeding.
If you are pregnant and have received a COVID-19 vaccine, we encourage you to enroll in v-safe, CDC’s smartphone-based tool that provides personalized health check-ins after vaccination. A v-safe pregnancy registry has been established to gather information on the health of pregnant people who have received a COVID-19 vaccine.
- COVID-19 Vaccines for Pregnant or Breastfeeding People
- Monitoring Systems for Pregnant People
- V-safe Pregnancy Registry
How long does protection from a COVID-19 vaccine last?
We don’t know how long protection lasts for those who are vaccinated. What we do know is that COVID-19 has caused very serious illness and death for a lot of people. If you get COVID-19, you also risk giving it to loved ones who may get very sick. Getting a COVID-19 vaccine is a safer choice.
Experts are working to learn more about both natural immunity and vaccine-induced immunity. CDC will keep the public informed as new evidence becomes available.
How many doses of COVID-19 vaccine will I need to get?
The number of doses needed depends on which vaccine you receive. To get the most protection:
- Two Pfizer-BioNTech vaccine doses should be given 3 weeks (21 days) apart.
- Two Moderna vaccine doses should be given 1 month (28 days) apart.
- Johnson & Johnsons Jansen (J&J/Janssen) COVID-19 vaccine requires only one dose.
If you receive a vaccine that requires two doses, you should get your second shot as close to the recommended interval as possible. However, your second dose may be given up to 6 weeks (42 days) after the first dose, if necessary.. You should not get the second dose earlier than the recommended interval.
If I have an underlying condition, can I get a COVID-19 vaccine?
People with underlying medical conditions can receive a COVID-19 vaccine as long as they have not had an immediate or severe allergic reaction to a COVID-19 vaccine or to any of the ingredients in the vaccine. Learn more about vaccination considerations for people with underlying medical conditions. Vaccination is an important consideration for adults of any age with certain underlying medical conditions because they are at increased risk for severe illness from COVID-19.
Can I get vaccinated against COVID-19 while I am currently sick with COVID-19?
No. People with COVID-19 who have symptoms should wait to be vaccinated until they have recovered from their illness and have met the criteria for discontinuing isolation; those without symptoms should also wait until they meet the criteria before getting vaccinated. This guidance also applies to people who get COVID-19 before getting their second dose of vaccine.
Myths and Facts about COVID-19 Vaccines
How do I know which COVID-19 vaccine information sources are accurate?
Accurate vaccine information is critical and can help stop common myths and rumors.
It can be difficult to know which sources of information you can trust. Before considering vaccine information on the Internet, check that the information comes from a credible source and is updated on a regular basis. Learn more about finding credible vaccine information.
Do COVID-19 vaccines contain microchips?
No. COVID-19 vaccines do not contain microchips. Vaccines are developed to fight against disease and are not administered to track your movement. Vaccines work by stimulating your immune system to produce antibodies, exactly like it would if you were exposed to the disease. After getting vaccinated, you develop immunity to that disease, without having to get the disease first.
Learn more about the ingredients in the COVID-19 vaccinations authorized for use in the United States.
Learn more about how mRNA COVID-19 vaccines work.
Can receiving a COVID-19 vaccine cause you to be magnetic?
No. Receiving a COVID-19 vaccine will not make you magnetic, including at the site of vaccination which is usually your arm. COVID-19 vaccines do not contain ingredients that can produce an electromagnetic field at the site of your injection. All COVID-19 vaccines are free from metals.
Learn more about the ingredients in the COVID-19 vaccinations authorized for use in the United States.
Do any of the COVID-19 vaccines authorized for use in the United States shed or release any of their components?
No. Vaccine shedding is the term used to describe the release or discharge of any of the vaccine components in or outside of the body. Vaccine shedding can only occur when a vaccine contains a weakened version of the virus. None of the vaccines authorized for use in the U.S. contain a live virus. mRNA and viral vector vaccines are the two types of currently authorized COVID-19 vaccines available.
Is it safe for me to get a COVID-19 vaccine if I would like to have a baby one day?
Yes. If you are trying to become pregnant now or want to get pregnant in the future, you may get a COVID-19 vaccine when one is available to you.
There is currently no evidence that COVID-19 vaccination causes any problems with pregnancy, including the development of the placenta. In addition, there is no evidence that female or male fertility problems are a side effect of any vaccine, including COVID-19 vaccines.
Will a COVID-19 vaccine alter my DNA?
No. COVID-19 vaccines do not change or interact with your DNA in any way. Both mRNA and viral vector COVID-19 vaccines deliver instructions (genetic material) to our cells to start building protection against the virus that causes COVID-19. However, the material never enters the nucleus of the cell, which is where our DNA is kept.
Will getting a COVID-19 vaccine cause me to test positive for COVID-19 on a viral test?
No. None of the authorized and recommended COVID-19 vaccines cause you to test positive on viral tests, which are used to see if you have a current infection.
If your body develops an immune response to vaccination, which is the goal, you may test positive on some antibody tests. Antibody tests indicate you had a previous infection and that you may have some level of protection against the virus.
Learn more about the possibility of COVID-19 illness after vaccination
Can the CDC mandate that I get a COVID-19 vaccine?
No. The federal government does not mandate (require) vaccination for people. Additionally, CDC does not maintain or monitor a person’s vaccination records. Whether a state or local government or employer, for example, can require or mandate COVID-19 vaccination is a matter of state or other applicable law
Can a COVID-19 vaccine make me sick with COVID-19?
No. None of the authorized COVID-19 vaccines in the United States contain the live virus that causes COVID-19. This means that a COVID-19 vaccine cannot make you sick with COVID-19.
COVID-19 vaccines teach our immune systems how to recognize and fight the virus that causes COVID-19. Sometimes this process can cause symptoms, such as fever. These symptoms are normal and are signs that the body is building protection against the virus that causes COVID-19. Learn more about how COVID-19 vaccines work.
Can being near someone who received a COVID-19 vaccine affect my menstrual cycle?
No. Your menstrual cycle cannot be affected by being near someone who received a COVID-19 vaccine.
Many things can affect menstrual cycles, including stress, changes in your schedule, problems with sleep, and changes in diet or exercise. Infections may also affect menstrual cycles.
General COVID-19 Vaccine Information & Resources
- How CDC Is Making COVID-19 Vaccine Recommendations
- V-Safe Information
- Vaccine Safety Monitoring
- COVID-19 Vaccine Manufacturer Information
- CDC information regarding the COVID-19 vaccination can be found at https://www.cdc.gov/coronavirus/2019-ncov/vaccines/
For up-to-date information on Kentucky’s COVID-19 vaccination efforts, please visit https://govstatus.egov.com/ky-covid-vaccine