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1 results

  • First molecular survey and identification of Anaplasma spp. in white yaks (Bos grunniens) in China

  • JIFEI YANG, ZHIJIE LIU, QINGLI NIU, JUNLONG LIU, GUIQUAN GUAN, JINGYING XIE, JIANXUN LUO, SHUQING WANG, SHUFANG WANG, HONG YIN
  • Journal:
    Parasitology / Volume 143 / Issue 6 / May 2016
    Published online by Cambridge University Press:
    22 March 2016, pp. 686-691

  • Anaplasmosis is caused by a group of obligate intracellular bacteria in the genus Anaplasma, which are transmitted by ticks and infect humans, domestic animals and wildlife. This study was conducted to determine the prevalence and molecular characterization of Anaplasma spp. in semi-wild white yaks sampled in Tianzhu Tibetan Autonomous County, northwest China. Out of 332 samples tested, 35 (10·9%) were positive for Anaplasma spp. The positive rates were 6·2% (20/322) and 5·3% (17/322) for Anaplasma bovis and Anaplasma phagocytophilum in white yaks, respectively. None of the sample was positive for Anaplasma marginale. Two (0·6%) samples were simultaneously positive to A. bovis and A. phagocytophilum. Sequence analysis of the 16S rRNA gene revealed two genotypes (ApG1 and ApG2) of A. phagocytophilum and two sequence types (ST1 and ST2) of A. bovis in white yaks. This study is the first to document the presence of Anaplasma in white yaks. Our findings extend the host range for Anaplasma species and provide more valuable information for the control and management of anaplasmosis in white yaks.