AstraZeneca Vaccine Only 62% Effective; Impact On Elderly Unclear As More Data Needed
December 08, 2020 at 11:49 AM EST
Unlike Moderna and Pfizer, the AstraZeneca vaccine (which uses a different method) was found to be just 62% effective for all volunteers who received two doses. And the study didn't involve even a single volunteer above the age of 55.