From a series of tests covering 15 months, another instance is recorded of the detection of the virus of poliomyelitis in urban sewage. It has not yet been possible to detect the virus of poliomyelitis in sewage during non-epidemic periods. It is likely that the periodic sampling of sewage for pathogenic viruses or bacteria may be a method of epidemiological value.
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Trask et al. (1942) studied this question.
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