COVID: UCSF Expert Weighs In On J&J Vaccine Blood Clots, Masks, Herd Immunity
COVID: UCSF Expert Weighs In On J&J Vaccine Blood Clots, Masks, Herd Immunity

Allen Martin talks to UCSF infectious disease specialist Dr. Monica Gandhi about the risk of blood clots with the Johnson & Johnson vaccine, the need for masks, herd immunity and more.