Table 3.

The mostly likely clusters and secodary clusters of viral hepatitis in China ³.

Type of Viral Hepatitis	Cluster Type	Location	Location IDs Included	Coordinates	Radius (Km)	Time (Year)	Number of Cases	Expected Cases	Annual Cases/100,000	RELATIVE RISK	LLR	p-Value
A	Most likely cluster	Xizang	Xizang, Qinghai, Xinjiang, Sichuan, Yunnan, Gansu, Ningxia, Guizhou, Chongqing	31.1 N, 89.1 E	1790.28	2003–2008	225,471	61,027.91	14.7	5.02	154,163.66	<0.001
A	Secondary cluster	Henan	Henan, Hubei, Anhui, Shaanxi	33.8 N, 113.6 E	445.66	2003–2004	40,424	20,496.61	7.8	2.03	7829.79	<0.001
B	Most likely cluster	Gansu	Gansu, Ningxia, Shaanxi, Sichuan, Qinghai, Chongqing, Shanxi, Neimenggu, Henan, Hubei	36.0 N, 103.8 E	1023.00	2006–2011	3,010,858	1,839,009.52	127.0	1.82	374,337.42	<0.001
B	Secondary cluster	Hainan	Hainan, Guangxi, Guangdong	19.2 N, 109.8 E	583.68	2010–2015	1,160,486	754,743.36	119.3	1.59	100,129.46	<0.001
B	Secondary cluster	Heilongjiang	Heilongjiang	46.8 N, 127.9 E	—	2004–2005	63,354	59,295.19	82.9	1.07	136.47	<0.001
C	Most likely cluster	Xizang	Xizang, Qinghai, Xinjiang, Sichuan, Yunnan, Gansu, Ningxia, Guizhou, Chongqing, Shaanxi, Guangxi, Hunan, Shanxi, Neimenggu, Hubei, Henan, Hainan	31.1 N, 89.1 E	2454.71	2010–2015	743,192	366,284.22	19.7	2.86	209,702.96	<0.001
E	Most likely cluster	Fujian	Fujian, Jiangxi, Zhejiang, Guangdong, Anhui, Hunan, Shanghai, Hubei, Jiangsu	26.0 N, 118.0 E	742.95	2010–2015	95,534	52769.84	3.0	2.22	18,154.26	<0.001
E	Secondary cluster	Liaoning	Liaoning	41.5 N, 123.5 E	—	2003–2008	13,013	4225.54	5.1	3.18	5988.83	<0.001
E	Secondary cluster	Chongqing	Chongqing	29.8 N, 107.8 E	—	2013–2015	2759	1483.82	3.1	1.87	438.96	<0.001
E	Secondary cluster	Xinjiang	Xinjiang	42.0 N, 85.7 E	—	2015	535	388.91	2.3	1.38	24.57	<0.001
Unspeficied	Most likely cluster	Zhejiang	Zhejiang, Shanghai, Jiangsu, Fujian	29.1 N, 120.1 E	400.88	2003–2008	129,643	43,380.75	12.1	3.44	61,614.92	<0.001
Unspeficied	Secondary cluster	Guizhou	Guizhou, Chongqing, Guangxi, Hunan, Sichuan, Yunnan, Guangdong, Hubei, Shaanxi, Hainan, Jiangxi	26. 7 N, 106.6 E	899.36	2003–2007	127,014	110,380.63	4.7	1.18	1432.19	<0.001
Unspeficied	Secondary cluster	Xinjiang	Xinjiang	42.0 N, 85.7 E	—	2004–2007	6704	3297.72	8.3	2.04	1358.39	<0.001

³ The radius is reported only when the cluster areas include more than 1 units, and the criteria for Reporting Secondary Clusters is “no geographical overlap”.