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Table 1 Seroprevalence of Chlamydia abortus infection in white yaks associated with different factors in Tianzhu Tibetan Autonomous County, northwest China by indirect hemagglutination assay (IHA)

From: Seroprevalence and risk factors of Chlamydia abortus infection in free-ranging white yaks in China

Biometric data Category No. tested No. positive Prevalence (%)
Region Zhuaxixiulong 73 21 28.77
  Xidatan 901 137 15.21
Sex Male 289 50 17.30
  Female 685 108 15.78
Season Spring 220 24 10.91
  Summer 273 68 24.91
  Autumn 231 26 11.26
  Winter 250 40 16.00
Age (yr) 0 < yr ≤1 115 14 12.17
  1 < yr ≤ 2 180 27 15.00
  2 < yr ≤ 3 175 36 20.57
  > 3 504 81 16.07
Total   974 158 16.22