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Nematodes and water pollution in eastern part of Nile Delta.

Examination of some represented water sites revealed presence larvae and eggs of the nematodes infecting man and animals. Eggs in a descending order of abundance were Trichostrongylus, Toxocara canis, T. vitolorum, and Ascaris sp., then Trichocephalus and Ancylostoma sp. Larvae in a descending order were Strongyloides, Trichostrongylus and Ancylostoma sp. No doubt contaminated or polluted water plays an important role as nematode-borne source.