Lymphatic Filariasis and Onchocerciasis

Lymphatic filariasis (caused by Wuchereria bancrofti and Brugia species) and onchocerciasis (river blindness, caused by Onchocerca volvulus) are debilitating filarial nematode infections targeted for elimination by global health programs. This topic is vital for tertiary students in public health and parasitology in Zambia, a region concerned with these vector-borne diseases. The curriculum covers the biology of the adult worms and microfilariae, transmission by mosquito and blackfly vectors respectively, and the pathogenesis leading to lymphedema, elephantiasis, and visual impairment or blindness. Students will learn diagnostic techniques such as nocturnal blood smears for microfilariae, antigen tests, and skin snips, alongside the principles of mass drug administration (MDA) with ivermectin and albendazole. The socio-economic impact and the role of community-directed treatment are emphasized. Mastery of this topic equips future health professionals with the knowledge to support national elimination programs, manage chronic morbidity, and understand the challenges of neglected tropical disease control, all critical for academic and professional success.