If the chickenpox vaccine lasts 20 years, why not the COVID-19 shot?
Will the third booster shot be our last? Israeli doctors explain the science behind it.
Health worker prepares a Covid-19 vaccine at a temporary Clalit health care center in Jerusalem, September 30, 2021.(photo credit: YONATAN SINDEL/FLASH90)ByMAAYAN JAFFE-HOFFMAN
