All of the following statements concerning the risk of vaccine-associated paralytic poliomyelitis (VAPP) are true except:
ExplanationVaccine-associated paralytic poliomyelitis (VAPP), which follows reversion of the OPV strain to a neurovirulent strain, has accounted for all cases of polio in the United States since 1979. The risk is higher in vaccinees than in contacts, after the first dose, and in immunocompromised persons.