Table 4 Spatial-temporal clustering of reported human brucellosis in the mainland of China from 2012 to 2016

Primary Cluster

Heilongjiang (47.86 N,127.76E) /1146.37

2012/1/1–2013/12/31

4

42 951

Secondary Cluster 1

Tibet (31.49 N, 88.44E) /1109.00

2015/1/1–2016/12/31

3

17 264

Secondary Cluster 2

Shanxi (37.57 N,112.29E)/ 399.03

2014/1/1–2015/12/31

2

27 582

Secondary Cluster 3

Hubei (30.98 N,112.27E)/ 346.76

2015/1/1–2015/12/31

2

5830