Abstract Background The Oral Polio Vaccine (OPV or Sabin) is genetically unstable and may mutate to form vaccine-derived polioviruses (VDPVs). Methods In 2014. two VDPVs type 2 were identified during routine surveillance of acute flaccid paralysis (AFP) cases. Consequently. https://www.markbroyard.com/best-flash-pp-aluminum-lotion-pump-supply-amazing-save/