Loa loa filariasis causes
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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1] Associate Editor(s)-in-Chief: Kalsang Dolma, M.B.B.S.[2]
Overview
Loiasis is caused by the nematodes (roundworm) Loa loa that can inhabit the lymphatics and subcutaneous tissues of humans. Adult Loa worms are sexual, with males considerably smaller than females at 30–34 mm long and 0.35-0.42 mm wide compared to 40–70 mm long and 0.5 mm wide. Adults live in the subcutaneous tissues of humans, where they mate and produce worm-like eggs called microfilaria. These microfilariae are 250-300μm long, 6-8μm wide, and can be distinguished morphologically from other filariae—they are sheathed and contain body nuclei that extend to the tip of the tail.