General vaccination nearly eliminated paralytic poliovirus infections, though rare cases from other enteroviruses like Coxsackievirus A7 persist, highlighting the need for continued surveillance.
Persistent non-polio enteroviral paralysis warrants clinical awareness; leaves open the full impact of vaccination on enteroviral disease.
Virological investigations of patients in Scotland with poliomyelitis-like paralysis showed near-disappearance of paralytic poliovirus infections after general vaccination and persistence of a few paralytic infections with other enteroviruses. Coxsackieviruses, especially of type A7, were mainly involved, but no enterovirus had presented a serious or increasing threat. Because of occasional importation of virulent poliovirus and some continued circulation of virus in the population, it remains important to continue surveillance and maintain vaccination at a high level.
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Grist et al. (1970) studied this question.