where helminthic diseases caused by Ascaris and Trichuris spp. are endemic within the inhabitants and the place raw untreated sewage is used to irrigate salad crops and/or vegetables eaten raw, transmission of those infections is likely to happen by way of the consumption of such crops. A examine in West Germany (reported by Shuval et al. 1986) offers further evidence to support this speculation and further evidence was additionally offered by Shuval et al. (1985; 1986) to point out that cholera can be tranmitted via the same channel. The cleaner water passes over a
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