Israeli COVID vaccine trial volunteers asked to get Pfizer booster
Four cohorts of between 200 and 250 volunteers were administered low, medium, high or a top dose of the vaccine or a placebo.
Hadassah-University Medical Center's Prof. Yossi Karko (left) and Hannah Drori, chief of the hospital’s clinical research center, administer Brilife vaccine to a volunteer(photo credit: HADASSAH)ByMAAYAN JAFFE-HOFFMAN
