The epidemiological characteristics of poliomyelitis in a relatively isolated community in western Montana remain unchanged despite a lower incidence compared to urban areas.
May indicate protective rural isolation effects; leaves open mechanisms and relevance to other pathogens or eras.
Although incidence of poliomyelitis in this relatively isolated commu¬ nity of western Montana has been considerably lower than in more densely populated urban areas, the epidemiological characteristics of the disease have remained unchanged.
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Gerloff et al. (1959) studied this question.