Veuer’s Elizabeth Keatinge tells us why one study says some people may only need one shot of the Covid-19 vaccine to be effective.
U.S. Advisers Endorse Johnson & Johnson's Coronavirus Vaccine
KDKA CBS 2 Pittsburgh
U.S. health advisers have endorsed a one-dose COVID-19 vaccine from Johnson & Johnson. KDKA's Dr. Maria Simbra has more.
