Table 4. The detected most likely purely spatial clusters of Beijing HFMD, 2008–2012.

Year	Center	Cluster areas (n)	Radius (km)	Observed cases	Expected cases	Relative risk	P-value
2008	Yufa town, Daxing	56	41.65	6185	4474.22	1.58	0.001
2009	Yufa town, Daxing	56	41.65	9323	5895.43	1.95	0.001
2010	Weishanzhuang town, Daxing	36	24.65	11641	7444.33	1.76	0.001
2011	Xinzhen community, Fangshan	40	24.00	6243	3840.32	1.79	0.001
2012	Anding town, Daxing	39	28.76	9787	6361.95	1.73	0.001