Visceral Leishmaniasis (VL) is a vector-borne disease endemic to the Indian subcontinent. The Phlebotomus genus of sand flies is the vector for VL in the Old World, with the vector on the Indian Subcontinent being Phlebotomus argentipes. Cattle are a commodity in this region and a frequent host source of P. argentipes bloodmeals. The purpose of this study was to determine the efficacy of a single oral dose fipronil against adult and larval P. argentipes. Ten Bos indicus cattle were used during the study in a controlled environment. The study was conducted in Bihar, India, and involved adult and larval bioassays using laboratory-reared P. argentipes. The results were positive in that they led to up to 100% mortality in both adult and larval sand flies over a 21-d period after a single dose of fipronil.
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Vol. 50 • No. 4