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Table_1_Prevalence and Population Genetics Analysis of Enterocytozoon bieneusi in Dairy Cattle in China.xls (33.5 kB)

Table_1_Prevalence and Population Genetics Analysis of Enterocytozoon bieneusi in Dairy Cattle in China.xls

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posted on 2019-06-25, 04:17 authored by Hai-Yan Wang, Meng Qi, Ming-Fei Sun, Dong-Fang Li, Rong-Jun Wang, Su-Mei Zhang, Jin-Feng Zhao, Jun-Qiang Li, Zhao-Hui Cui, Yuan-Cai Chen, Fu-Chun Jian, Rui-Ping Xiang, Chang-Shen Ning, Long-Xian Zhang

Enterocytozoon bieneusi, an obligate intracellular pathogen, can infect various hosts. In this study, 3527 dairy cattle fecal specimens were collected from different geographic locations in China (including 673 from Shandong province, 1,440 from Guangdong province and 1,414 from Gansu province) and examined for the presence of E. bieneusi using polymerase chain reactions targeting the ribosomal internal transcribed spacer (ITS). The dominant genotypes identified were further subtyped by multilocus sequence typing. The overall prevalence of E. bieneusi was 14.2% (501/3527), with a significant difference in prevalence among the different geographical locations (P < 0.001). Our logistic regression analysis showed that all four variables (farming model, location, age, and clinical manifestations) had strong effects on the risk of contracting E. bieneusi. Sequence analysis revealed 11 genotypes: eight known genotypes (J, I, BEB4, BEB10, D, EbpC, CM19, and CM21) and three novel genotypes (named here as CGC1, CGC2, and CGC3). Genotypes J and I, the commonest, were found on all farms across the three provinces. Our linkage disequilibrium analysis showed a clonal population structure in the E. bieneusi dairy cattle population but the ITS genotypes had different population structures. Phylogenetic and haplotype network analysis showed the absence of geographical segregation in the E. bieneusi dairy cattle populations. Instead, they revealed the presence of host adaptation to the E. bieneusi populations in various animals. Our findings augment the current understanding of E. bieneusi transmission dynamics.

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