Genotyping and identification of Cryptosporidium spp., Giardia duodenalis and Enterocytozoon bieneusi from free–range Tibetan yellow cattle and cattle–yak in Tibet, China

• Published in: Acta tropica 2020-12, Vol.212, p.105671-105671, Article 105671
• Main Authors: Wu, Yayun, Chen, Yuancai, Chang, Yankai, Zhang, Xiangqian, Li, Dongfang, Wang, Lu, Zheng, Shuangjian, Wang, Rongjun, Zhang, Sumei, Li, Jiakui, Zhang, Longxian
• Format: Article
• Language: English
• Subjects: Animals; Cattle - parasitology; Cryptosporidium - genetics; Cryptosporidium - isolation & purification; Cryptosporidium spp; Enterocytozoon - genetics; Enterocytozoon - isolation & purification; Enterocytozoon bieneusi; Genotype; Giardia duodenalis; Giardia lamblia - genetics; Giardia lamblia - isolation & purification; Grazing; Local breed cattle; Tibet - epidemiology; Zoonotic
• ISSN: 0001-706X; 1873-6254
• DOI: 10.1016/j.actatropica.2020.105671

•The study reported the prevalence and distribution of intestinal pathogens in grazing native breed cattle in China.•C. bovis, G. duodenalis assemblage A and E, E. bieneusi genotype EbpC, CHC8 and I were identified in Tibetan yellow cattle.•Genotype EbpC belonged to zoonotic Group 1, whereas CHC8 and I belonged to increasing zoonotic potential Group 2. To assess the prevalence and molecular characteristics of Cryptosporidium spp., Giardia duodenalis and Enterocytozoon bieneusi in natural grazing local breed cattle, 513 fecal samples from Tibetan yellow cattle and cattle–yaks were tested for these pathogens. Cryptosporidium, G. duodenalis and E. bieneusi in Tibetan yellow cattle prevalence were 0.7% (3/442), 3.8% (17/442) and 2.5% (11/442), respectively. Cryptosporidium bovis (n = 3), G. duodenalis assemblages A (n = 2) and E (n = 15) were identified based on sequence analysis. Among three E. bieneusi genotypes, I (n = 7), EbpC (n = 2) and CHC8 (n = 2) detected, EbpC was classified into Group 1, which has a significant zoonotic importance, whereas genotypes I and CHC8 belonged to Group 2. None of these pathogens was identified in cattle–yaks. The presence of zoonotic C. bovis, assemblage A and EbpC indicates Tibetan yellow cattle may be a potential spread source of intestinal pathogens with a zoonotic transmission risk. The relationships between natural free–range mode and the prevalence or genetic diversity of these pathogens need be confirmed in further studies. [Display omitted]