Table 3.

Significant spatial–temporal clusters of HD in white-tailed deer during the entire study period (1980–2013) with maximum spatial window = 50% of the total number of HD cases and maximum temporal window = 50% of the entire study period

	Cluster	Counties	Observed	Expected	P-value	Period
Primary	1	32	1993	785.95	P < 0.0001	2006–2007
Secondary	2	18	657	168.66	P < 0.0001	2005–2006
	3	5	270	20.69	P < 0.0001	2013
	4	3	160	11.45	P < 0.0001	1980

Cluster: cluster ID. Counties: the number of counties in each cluster. Observed: the number of incidents in each cluster. Expected: the expected number of incidents in the cluster based on the random replications