To get maximum protection, you must get two doses of the same vaccine, administered at the appropriate times. It can take about six weeks (from first dose to second) before you are completely protected from COVID-19. If you only get one dose, you may not be protected (immune) against COVID-19.
Two doses are needed for the two COVID-19 vaccines from Pfizer and Moderna. The time between the doses depends on the vaccine you are getting:
- Pfizer vaccine - doses must be given 21 days apart - the State of Minnesota is providing Pfizer vaccines at their clinics
- Moderna vaccine - doses must be given 24-32 days apart - Scott County Public Health is providing Moderna vaccines at our clinics
It is critical that you get both vaccine doses, the same product for each dose, and that the doses are given at the correct time. The vaccine is only fully effective with both doses of vaccine. After the second dose, it takes about two weeks for your body to build up protection, so it’s about six weeks total from the first vaccine dose to when you should be fully protected.