Table 2.

Pure spatial clustering of P. vivax cases in China during 2005–2014

Year	Clusters	Latitude	Longitude	N	Observed cases	Expected cases	RR	p value
2005	Most likely	33.68399	116.72312	15	15,241	570.93	48.44	0.001
	Secondary	24.03683	97.80955	22	5590	105.74	63.35	0.001
2006	Most likely	33.68399	116.72312	15	35,053	958.00	97.94	0.001
	Secondary	24.03683	97.80955	23	5595	177.28	34.99	0.001
2007	Most likely	33.21876	116.58207	35	31,436	1543.33	66.53	0.001
	Secondary	24.03683	97.80955	29	3122	143.51	23.32	0.001
2008	Most likely	33.03381	117.03400	32	15,766	717.31	57.44	0.001
	Secondary	24.03683	97.80955	28	2091	109.56	20.73	0.001
2009	Most likely	33.03381	117.03400	32	6533	345.07	39.07	0.001
	Secondary	24.03683	97.80955	21	1561	53.42	33.31	0.001
2010	Most likely	24.03683	97.80955	13	1320	30.02	57.20	0.001
	Secondary	33.03381	117.03400	39	1872	151.63	18.03	0.001
2011	Most likely	24.03683	97.80955	12	799	11.67	95.57	0.001
	Secondary	33.03381	117.03400	39	678	72.60	12.01	0.001
2012	Most likely	24.03683	97.80955	23	516	9.26	101.22	0.001
	Secondary	28.20380	120.13838	22	20	1.06	19.19	0.001
2013	Most likely	24.85646	97.91907	7	289	2.31	183.35	0.001
	Secondary	32.00298	117.56783	9	22	0.76	29.67	0.001
2014	Most likely	25.27506	98.49739	14	324	4.49	113.70	0.001
	Secondary	32.94082	104.77725	7	47	0.19	261.31	0.001

N number of counties per cluster, RR indicates relative risk for malaria case in the location