Table 1. Etiologic distribution of viruses detected in HFMD cases during March 2010 to October 2012 in Hunan Province.

Year	Case number	Positive cases	Positive rate, %	EV71 positivity		CoxA16 positivity		Other intestinal viruses positivity
				Case number	Positive constituent ratio, %	Case number	Positive constituent ratio, %	Case number	Positive constituent ratio, %
2010	6937	4475	64.51	2431	54.30	713	15.93	1333	29.77
2011	7664	4410	57.54	1518	34.38	1514	34.28	1384	31.34
2012	8696	5840	67.16	3470	58.77	742	12.57	1692	28.66
Total	23297	14725	63.21	7419	50.14	2969	20.06	4409	29.80