School of Veterinary Medicine, Wachemo University, Wachemo, Ethiopia.
School of Veterinary Medicine, Wolaita Sodo University, Wolaita Sodo, Ethiopia.
Res Vet Sci. 2023 Aug;161:80-85. doi: 10.1016/j.rvsc.2023.06.008. Epub 2023 Jun 10.
Epizootic lymphangitis is a contagious, chronic and overwhelming disease of equids, characterized by chronic discharging skin nodules. This study was aimed to investigate the prevalence and associated risk factors of epizootic lymphangitis in equines at Nagele Arsi town, southeastern Ethiopia. A cross-sectional study using a random sampling technique was employed from December 2021 to June 2022 via clinical and microscopic examinations of the lesions. The overall prevalence of epizootic lymphangitis was 4.37% with a prevalence of 6.69%, 0.72%, and 0% in horses, donkeys, and mules, respectively. The sex, species, harness type, season, and body condition scores of equids have shown statistically significant differences (p < 0.05) with the prevalence of epizootic lymphangitis. Macroscopically, the lesions revealed varying degrees of nodule to ulcer on the sternum, limbs, face, and cervical region of the equine. Upon giemsa stain, fungal hyphae with a halo (unstained capsule-like) structure were observed. Histologically, pyogranulomatous inflammation with fibroplasia was appreciated. In conclusion, epizootic lymphangitis was rampant in the study area. This requires a detailed investigation incorporating a large sample size using fungal culture and other molecular techniques including PCR.
马传染性淋巴管炎是一种传染性、慢性和全身性的马属动物疾病，其特征为慢性排出皮肤结节。本研究旨在调查埃塞俄比亚东南部纳盖莱·阿尔西镇马属动物中传染性淋巴管炎的流行情况及相关危险因素。本研究采用横断面研究设计，于 2021 年 12 月至 2022 年 6 月期间，通过临床和显微镜检查病变，采用随机抽样技术进行。传染性淋巴管炎的总流行率为 4.37%，马、驴和骡的流行率分别为 6.69%、0.72%和 0%。马属动物的性别、物种、马具类型、季节和身体状况评分与传染性淋巴管炎的流行呈统计学显著差异（p<0.05）。宏观上，病变在马的胸骨、四肢、面部和颈部呈现出不同程度的结节至溃疡。吉姆萨染色后，观察到具有晕圈（未染色的胶囊样）结构的真菌菌丝。组织学上，观察到化脓性肉芽肿性炎症伴纤维增生。总之，研究区域的传染性淋巴管炎猖獗。这需要进行详细调查，包括使用真菌培养和其他分子技术（包括 PCR）进行大样本量的调查。
