No. None of the vaccines contain the live virus that causes COVID-19, so they can't give you COVID-19.

After receiving a COVID-19 vaccine, you may have some side effects, which are normal signs that your body is building protection. Side effects are typically mild to moderate, occur within the first 3 days beginning the day of the vaccination, and resolve within 1-2 days of onset. Some people have no side effects. Common side effects on the arm where you received the shot include pain, redness, and swelling. Throughout the rest of your body, you may feel tiredness, headache, muscle pain, chills, fever, and nausea. For more information, please see the CDC's  Possible Side Effects After Getting a COVID-19 Vaccine.

The currently available vaccines provide protection from COVID-19 disease, including its variants, like the Delta variant. Learn the latest about variants from CDC.

Yes. You can more than double your protection against re-infection by getting vaccinated. A study published on Aug 6, 2021, compared Kentucky residents infected with SARS-CoV-2 in May/June 2020 and re-infected a year later to those not re-infected. The study found that unvaccinated people were 2.34 times more likely to get re-infected than those vaccinated.

Once they have completed their isolation period, people previously infected with COVID-19 may receive the vaccine. According to the CDC, people appear to become susceptible to reinfection after more than 90 days from the time they were initially infected. Reinfection appears to be rare during the first 90 days after someone was infected with COVID-19.

No. COVID-19 vaccines to not change or interact with your DNA in any way. The vaccines teach our bodies how to protect against future COVID infections. Learn more about how the vaccines work from the CDC.