Here we report three cases of canine trypanosomosis presented to the Veterinary Teaching Hospital in the Faculty of Veterinary Medicine and Animal Sciences at the University of Peradeniya, Sri Lanka during 2018. The cases were presented to the hospital when the dogs were already in critical condition. Confirmation of the cases was done by microscopic examination of Giemsa-stained thin blood smears. All three dogs had bilateral keratitis and anterior chamber cloudiness in eyes. Despite the intramuscular administration of diminazine aceturate, all of them subsequently died. Amplification and sequencing of a fragment of the internal transcribed spacer 1 (ITS1) of the nuclear ribosomal DNA confirmed the parasite as Trypanosoma. evansi. This is the first record of clinical cases of canine trypanosomosis in Sri Lanka. The three cases reported here came from widely separated geographical locations within the country: Balangoda, Mullaitivu and Kadawatha.

在这里，我们报告了2018年在斯里兰卡Peradeniya大学兽医与动物科学学院兽医教学医院呈报的3例犬锥虫病病例。当这些犬已经处于危急状态时，这些病例已提交医院。通过显微镜检查吉姆萨染色的薄血涂片对病例进行确认。三只狗均患有双侧角膜炎和眼睛前房混浊。尽管肌内注射醋酸二甲嗪，但他们都随后死亡。核糖体DNA内部转录间隔区1（ITS1）片段的扩增和测序证实该寄生虫为锥虫。埃文西这是斯里兰卡犬锥虫病临床病例的第一笔记录。此处报告的三个案例来自该国分布广泛的地理位置：Balangoda，Mullaitivu和Kadawatha。