Vector holding clinical trials to boost immunity with 3 shots of EpiVacCorona vaccine - developer MOSCOW. May 5 (Interfax) - The Vector Center of the Federal Service for Surveillance on Consumer Rights Protection and Human Wellbeing (Rospotrebnadzor) is testing the possibility of administering three shots of the EpiVacCorona coronavirus vaccine as a way to enhance the effect of antibodies, head of the Vector department for zoonotic infections Alexander Ryzhikov said. "We have tested this, the triple vaccination, on animals [...] and the effect of higher and longer immunity has been confirmed;...