Hypothetical Relationship of Water Supplies to Poliomyelitis

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Abstract
During the past 5 yrs. several investigators have become advocates of the theory that poliomyelitis may be water-borne. Although evidence from laboratory studies is consistent with this hypothesis it is also consistent with transmission by other routes. The hypothesis is not satisfactory in explaining the natural behavior of this disease in human populations. The epidemiological pattern of poliomyelitis differs significantly from that of other diseases known to be water-borne. The author concludes that there is at present insufficient evidence to justify the belief that water is a medium which is of any practical importance in its spread.