This is good question. As per WHO recommendations and worldwide experience in responding to VAPP standard protocol is same as response to any WPV incident. This means using OPV to mop up the WPV or Vaccine Derived Polio Virus. The type of OPV either bOPV (bivalent type1 & 3) or mOPV (monovalent type 1 or 2 or 3) would depend upon the type of circulating virus and the risk factors in the specific geography and population.
Please refer to GPEI website for more details.
CHIFA profile: Jitendra Awale is Deputy Director of the CORE Group Polio Project, India. Professional interests: Immunization, RMNCH. Email address: jitendra.awaleATgmail.com