<prompt> Incubation period of vaccine associated paralytic poliomyelitis is1-2 hours.1-3 days7-10 days4-30 days  <response>: Vaccine derived paralytic poliomyelitis VAPP : Develop paralytic polio after 4-30 days of administration of OPV Poliomyelitis among contacts of OPV : Develop within 7-60 days after exposure to recent OPV - recepient Ref: Human vital pathogens by Liu 1st edition Pgno : 79 