Table 4.

The spatial-temporal irregular clusters of mumps cases from 2004 to 2020

Cluster type	Counties (n)	Time frame	Coordinates centre	Observed cases	Expected cases	LLR	RR	P value
Most likely	7	2018/12 – 2020/2	118.36 E, 34.00 N	9481	1146.05	11900.72	8.69	0.001
Secondary	1	2005/5 – 2007/12	120.21 E, 31.65 N	3012	212.05	5215.04	14.44	0.001
2nd secondary	18	2008/3 – 2009/8	119.20 E, 32.39 N	6465	2002.95	3171.44	3.31	0.001
3rd secondary	2	2008/11 – 2012/7	120.99 E, 31.61 N	3282	671.25	2617.61	4.96	0.001