Subcutaneous filariasis includes Loiasis caused by Loa loa (the African eye worm) Onchocerciasis (river blindness) caused by Onchocerca volvulus Lymphatic filariasis includes Bancroftian and Brugian lymphatic filariasis caused by Wuchereria bancrofti, Brugia malayi, and B timori Other types of filariasis include Mansonellosis caused by Mansonella perstans, with adult worms in the pleura, pericardium, or peritoneum, M ozzardi in subcutaneous tissues, and M streptocerca in the dermis Dirofilariasis caused by Dirofilaria immitis, the dog heartworm, with larvae in lungs or rarely in eyes, brain or testes; larvae do not develop to adult worms in humans Some specialty laboratories have screening serologic tests for filarial infection (including Wuchereria, Brugia, Onchocerca, and Mansonella infections).