Loa loa Infection (Loaiasis)

Filariasis is caused by nematodes (roundworms) that inhabit the lymphatics and subcutaneous tissues.  Eight main species infect humans.  Three of these are responsible for most of the morbidity due to filariasis: Wuchereria bancrofti and Brugia malayi cause lymphatic filariasis, and Onchocerca volvulus causes onchocerciasis (river blindness).  The other five species are Loa loa, Mansonella perstans, M. streptocerca, M. ozzardi, and Brugia timori.  (The last species also causes lymphatic filariasis.)

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