Taxonomy: s.f. Ancylostomatoidea
Animal: Necator americanus 3 10.jpg
Egg of Necator americanus (hook worm) - 70 x 38 microns - saline faecal preparation. This hookworm of humans has a prepatent development of several weeks to several months; infections are diagnosed by finding eggs in the faeces. This hookworm is found throughout America, southern Asia, Melanesia, Polynesia, central and southern Africa cf. A. duodenale - southern Europe, northern Africa, northern India, northern China and Japan.
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