Get the facts about COVID-19 vaccines - Mayo Clinic.
Should I get vaccinated if I have already had COVID-19?
Getting COVID-19 might offer some natural protection or immunity from reinfection with the virus that causes COVID-19. But it's not clear how long this protection lasts. Because reinfection is possible and COVID-19 can cause severe medical complications, it's recommended that people who have already had COVID-19 get a COVID-19 vaccine. If you’ve had COVID-19, wait until 90 days after your diagnosis to get a COVID-19 vaccine.