Table 1. The prevalence of Shigella in Xinjiang between 2008 and 2014.

Species/ serotype	Number (%) of isolates
	2008 (n = 15)	2009 (n = 46)	2010 (n = 30)	2011 (n = 41)	2012 (n = 91)	2013 (n = 150)	2014 (n = 85)	Total (n = 458)
S. flexneri	14 (93.3%)	43 (93.5%)	28 (93.3%)	34 (82.9%)	75 (82.4%)	109 (72.7%)	62 (72.9%)	365 (79.7%)
1a	0	0	2 (6.7%)	1 (2.4%)	3 (3.3%)	5 (3.3%)	1 (1.2%)	12 (2.6%)
1b	3 (2)	3 (6.5%)	7 (23.3%)	7 (17.1%)	6 (6.6%)	13 (8.7%)	8 (9.4%)	47 (10.3%)
1c	0	1 (2.2%)	2 (6.7%)	0	0	0	0	3 (0.7%)
2a	5 (33.3%)	26 (56.5%)	6 (20%)	15 (36.6%)	22 (24.2%)	37 (24.7%)	23 (27.1%)	134 (29.3%)
2b	2 (13.3%)	4 (8.7%)	5 (16.7%)	7 (17.1%)	8 (8.8%)	15 (10%)	5 (5.9%)	46 (10.0%)
2c	0	0	0	1 (2.4%)	1 (1.1%)	2 (1.3%)	0	4 (0.9%)
3a	1 (6.7%)	1 (2.2%)	0	2 (4.9%)	0	0	1 (1.2%)	5 (1.1%)
3b	0	0	0	0	1 (1.1%)	1 (0.7%)	1 (1.2%)	3 (0.7%)
4a	0	0	0	0	1 (1.1%)	2 (1.3%)	2 (2.4%)	5 (1.1%)
4b	0	0	0	0	0	2 (1.3%)	0	2 (0.4%)
Xv	2 (13.3%)	0	2 (6.7%)	1 (2.4%)	13 (14.3%)	9 (6.0%)	9 (10.6%)	36 (7.9%)
4s	0	0	0	0	0	7 (4.7%)	0	7 (1.5%)
6	0	1 (2.2%)	1 (3.3%)	0	3 (3.3%)	7 (4.7%)	5 (5.9%)	17 (3.7%)
x	1 (6.7%)	1 (2.2%)	1 (3.3%)	0	4 (4.4%)	6 (4.0%)	2 (2.4%)	15 (3.3%)
y	0	1 (2.2%)	0	0	5 (5.5%)	1 (0.7%)	1 (1.2%)	8 (1.7%)
Untypable	0	5 (10.9%)	2 (6.7%)	0	8 (8.8%)	2 (1.3%)	4 (4.7%)	21 (4.6%)
S. flexneri 2a, 1b, 2b and Xv	12 (80.0%)	33 (71.7%)	20 (66.7%)	30 (73.2%)	49 (53.8%)	74 (49.3%)	45 (52.9%)	263 (57.4%)
S. sonnei	1 (6.7%)	3 (6.5%)	2 (6.7%)	7 (17.1%)	16 (17.6%)	41 (27.3%)	23 (27.1%)	93 (20.3%)
S. sonnei+ S. flexneri 2a, 1b, 2b and Xv	13 (86.7%)	36 (78.3%)	22 (73.3%)	37 (90.2%)	65 (71.4%)	115 (76.7%)	68 (80.0%)	356 (77.7%)