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Table 1 Association of different variables in the seroprevalence of brucellosis in ovine and caprine in China

From: Brucellosis seroprevalence in ovine and caprine flocks in China during 2000–2018: a systematic review and meta-analysis

  Variables No. studies No. samples No. Positive Rate (%) (95% CI) Heterogeneity
χ2 P-value I2 (%)
Region Northeast China* 2 2651 211 5.60 (0-12.10) 46.10 0.000 97.8%
Northern China 3 846759 3663 3.20 (0-6.60) 84.81 0.000 97.6%
Northwest China 42 644113 13592 1.40 (1.00-1.80) 8545.14 0.000 99.6%
Eastern China 4 1066 130 7.00 (0-17.40) 106.33 0.000 98.1%
Southern China 3 6296 129 2.00 (0.50-3.60) 17.10 0.000 94.2%
Central China 2 1796 30 1.90 (0-3.80) 6.39 0.012 84.3%
Southwest China 10 132061 3814 5.30 (3.60-7.10) 1286.40 0.000 99.5%
Sampling year 2010-2018 47 1474801 19540 3.20 (2.70-3.60) 11402.65 0.000 99.7%
2000-2009 24 159941 2029 1.00 (0.70-1.30) 1367.24 0.000 98.4%
Method SAT 48 1607691 21115 2.20 (1.90-2.50) 12495.11 0.000 99.7%
RBPT 18 27051 454 2.80 (1.90-3.80) 219.96 0.000 95.5%
Species Goat 28 188687 4246 3.50 (2.80-4.10) 2835.30 0.000 99.3%
Sheep 45 1446055 17323 1.80 (1.50-2.20) 9705.32 0.000 99.6%
  Total 66 1634742 21569 2.30 (2.00-2.60) 12732.79 0.000 99.6%
  1. CI Confidence interval, SAT Serum agglutination test; RBPT Rose Bengal plate test
  2. *Northeast China: Heilongjiang, Jilin, Liaoning; Northern China: Inner Mongolia, Shanxi, Hebei, Beijing, Tianjin; Northwest China: Xinjiang, Qinghai, Gansu, Ningxia, Shaanxi; Eastern China: Shandong, Anhui, Jiangxi, Jiangsu, Zhejiang, Shanghai, Fujian; Southern China: Guangxi, Guangdong, Shenzhen, Hainan, Macao, Hong Kong; Central China: Henan, Hunan, Hubei; Southwest China: Tibet, Yunnan, Guizhou, Sichuan, Chongqing