FAQs on the COVID-19 Vaccine

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Information on booster doses


Frequently asked questions below:

“Are there side effects?”

Side effects are mild, temporary, and normal signs that your body is building protection. You may experience pain and swelling in the arm of the injection. Throughout the rest of your body, you may experience fever, chills, tiredness, and headaches.


“Can the vaccine give me COVID-19?”

There is no live COVID-19 virus in the vaccine. The vaccine imitates the infection so that our bodies create antibody defenses to fight off COVID-19.


“Is the vaccine effective? How was it created so quickly?”

Scientists had a significant head start developing the COVID-19 vaccines. COVID-19 is very similar to other viruses, which already have vaccines.

Testing was thorough and successful. More than 70,000 people participated in clinical trials for the two vaccines to see if they are safe and effective. To date, the vaccines are nearly 95% effective in preventing COVID-19.


“What will the vaccine cost?”

Yes, the COVID-19 vaccine will be free. Vaccine providers may be able to charge administration fees for giving the shot but they will be billed to insurance with no out-of-pocket cost to the patient.


“Will I have to take one vaccine dose or two?”

It depends on the vaccine. They may be available as both a single-dose and a two-dose series.


“If I had COVID-19 and recovered, do I still need to be vaccinated?”

It is recommended individuals who have had and recovered from COVID-19 also should be vaccinated.


“Do I still need to wear a mask and avoid close contact with others once I receive 2 doses of vaccine?”

It’s important for everyone to continue using all the tools available to help stop this pandemic as we learn more about how COVID-19 vaccines work in real-world conditions. It will take time after the vaccination for your body to respond and make enough antibodies to protect you. This could take up to one to two weeks after your last dose.

Current information suggests that it is possible that someone who has been vaccinated against COVID-19 may still have a mild or asymptomatic infection or spread the virus to others. So it is important to continue taking precautions. Cover your mouth and nose with a mask when around others, stay at least 6 feet away from others, avoid crowds and wash your hands often.


“What about vaccinations for my kids?”

Information about the pediatric vaccine has not been made available yet.


More resources from the CDC: