CDC recommends that people with certain immunocompromising conditions get an additional dose of Pfizer or Moderna COVID-19 vaccine. Your third dose should be the same product and at least 28 days after your second dose. (There is currently not enough data to recommend that people who received the Johnson & Johnson vaccine get an additional dose.) Talk to your health care provider about your medical condition and whether getting another dose is right for you. health.state.mn.us/diseases/coronavirus/vaccine/basics.html #immunocompromised