Filarial parasites affect over 130 million people in tropical and subtropical regions of the world, causing prolonged and debilitating illnesses ranging from lymphatic inflammation and elephantiasis to skin disease and blindness. This wide-ranging book, the outcome of an international symposium, focuses on the host-parasite interaction in lymphatic filariasis and onchocerciasis. Papers examine all aspects of the pathological and immunological consequences of infection as well as diagnosis, treatment, and control of filarial disease.