mansonella streptocerca, a roundworm nematoda that causes streptocerciasis, or subcutaneous filariasis

africa america blood chronic condition culicoides disease disorder edema endemic filariasis health healthcare illustration insect insectborne isolated larva lymph mansonella mansonelliasis medical medicine microfilaria microfilariae midge morphology mosquitoborne nematode parasite parasitic parasitism streptocerca streptocerciasis system tropica unhealthy unsheathed worm