Mayo Clinic answers questions about COVID-19 vaccine
December 14, 2020
How effective is the COVID-19 vaccination?
Although phase 3 trial results are not available, experimental vaccine interim data indicate 90% efficacy after two doses. Efficacy is the measure of effectiveness obtained from a randomized controlled clinical trial. Further details regarding the effectiveness of the vaccine, such as how long the vaccination offers protection, are not yet available.
The side effects for the COVID-19 vaccine are identical to the virus itself. If people are vaccinated and develop side effects, would they have to be tested for COVID- 19?Vaccine recipients will be provided with guidance on how to interpret side effects and what actions they should take following vaccination.
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