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Table 3 Distribution of S. flexneri and S. sonnei serotypes among patients with shigellosis in Beijing between 1994 and 2010 (by age group)

From: Changing trends and serotype distribution of Shigella species in Beijing from 1994 to 2010

Age groups No. (%) of isolates in serotypes
Total   S. flexneri serotype 1a S. flexneri serotype 1b S. flexneri serotype 2a S. flexneri serotype 2b S. flexneri serotype 3a S. flexneri serotype 3b S. flexneri serotype 4a S. flexneri serotype 4b S. flexneri serotype 4c S. flexneri serotype 5 S. flexneri serotype 6 S. flexneri serotype x S. flexneri serotype y S. sonnei
0–2 358 (6.03) 8 (4.68) 0 (0.00) 198 (6.28) 3 (2.17) 2 (6.67) 1 (33.33) 12 (6.94) 3 (6.38) 0 (0.00) 0 (0.00) 5 (9.43) 18 (10.11) 9 (8.18) 99 (6.04)
2–5 463 (7.80) 10 (5.85) 2 (14.29) 202 (6.41) 9 (6.52) 1 (3.33) 1 (33.33) 19 (10.98) 0 (0.00) 5 (2.66) 2 (6.67) 4 (7.55) 13 (7.30) 5 (4.55) 190 (11.59)
6–10 667 (11.24) 16 (9.36) 3 (21.43) 307 (9.74) 10 (7.25) 5 (16.67) 0 (0.00) 23 (13.29) 3 (6.38) 18 (9.57) 5 (16.67) 1 (1.89) 18 (10.11) 8 (7.27) 250 (15.25)
11–15 549 (9.25) 12 (7.02) 0 (0.00) 232 (7.36) 13 (9.42) 0 (0.00) 0 (0.00) 20 (11.56) 4 (8.51) 15 (7.98) 2 (6.67) 4 (7.55) 3 (1.69) 2 (1.82) 242 (14.77)
16–20 568 (9.57) 17 (9.94) 1 (7.14) 275 (8.72) 16 (11.59) 5 (16.67) 0 (0.00) 14 (8.09) 15 (31.91) 13 (6.91) 2 (6.67) 2 (3.77) 11 (6.18) 19 (17.27) 178 (10.86)
21–25 979 (16.50) 37 (21.64) 3 (21.43) 601 (18.84) 31 (22.46) 7 (23.33) 1 (33.33) 34 (19.65) 5 (10.64) 57 (30.32) 1 (3.33) 9 (16.98) 44 (24.72) 26 (23.64) 123 (7.50)
26–30 600 (10.11) 19 (11.11) 0 (0.00) 380 (12.05) 17 (12.32) 3 (10.00) 0 (0.00) 11 (6.36) 5 (10.64) 21 (11.17) 2 (6.67) 10 (18.87) 21 (11.80) 17 (15.45) 94 (5.74)
31–35 420 (7.08) 18 (10.53) 1 (7.14) 281 (8.91) 11 (7.97) 2 (6.67) 0 (0.00) 9 (5.20) 3 (6.38) 12 (6.38) 1 (3.33) 7 (13.21) 12 (6.74) 6 (5.45) 57 (3.48)
36–40 476 (8.02) 8 (4.68) 2 (14.29) 163 (5.17) 12 (8.70) 3 (10.00) 0 (0.00) 5 (2.89) 4 (8.51) 10 (5.32) 1 (36.67) 2 (3.77) 14 (7.87) 2 (1.82) 240 (14.64)
41–45 195 (3.29) 7 (4.09) 0 (0.00) 130 (4.12) 3 (2.17) 0 (0.00) 0 (0.00) 5 (2.89) 0 (0.00) 12 (6.38) 1 (3.33) 2 (3.77) 8 (4.49) 1 (0.91) 26 (1.59)
46–50 126 (2.12) 4 (2.34) 1 (7.14) 68 (2.16) 3 (2.17) 0 (0.00) 0 (0.00) 9 (5.20) 1 (2.13) 9 (4.79) 1 (3.33) 1 (1.89) 1 (0.56) 0 (0.00) 28 (1.71)
51–55 116 (1.95) 3 (1.75) 1 (7.14) 69 (2.19) 3 (2.17) 0 (0.00) 0 (0.00) 5 (2.89) 2 (4.26) 7 (3.72) 0 (0.00) 2 (3.77) 4 (2.25) 5 (4.55) 15 (0.92)
56–60 100 (1.69) 2 (1.17) 0 (0.00) 63 (2.00) 1 (0.72) 0 (0.00) 0 (0.00) 2 (1.16) 1 (2.13) 2 (1.06) 0 (0.00) 1 (1.89) 6 (3.37) 2 (1.82) 20 (1.22)
61–65 123 (2.07) 3 (1.75) 0 (0.00) 78 (2.47) 1 (0.72) 0 (0.00) 0 (0.00) 1 (0.58) 0 (0.00) 3 (1.60) 1 (3.33) 1 (1.89) 0 (0.00) 3 (2.73) 32 (1.95)
66–70 89 (1.50) 1 (0.58) 0 (0.00) 53 (1.68) 2 (1.45) 0 (0.00) 0 (0.00) 3 (1.73) 1 (2.13) 2 (1.06) 0 (0.00) 1 (1.89) 2 (1.12) 3 (2.73) 21 (1.28)
71–75 67 (1.13) 5 (2.92) 0 (0.00) 43 (1.36) 3 (2.17) 2 (6.67) 0 (0.00) 0 (0.00) 0 (0.00) 0 (0.00) 1 (3.33) 0 (0.00) 1 (0.56) 0 (0.00) 12 (0.73)
76–80 25 (0.42) 1 (0.58) 0 (0.00) 11 (0.35) 0 (0.00) 0 (0.00) 0 (0.00) 1 (0.58) 0 (0.00) 2 (1.06) 0 (0.00) 1 (1.89) 1 (0.56) 2 (1.82) 6 (0.37)
81–85 10 (0.17) 0 (0.00) 0 (0.00) 5 (0.16) 0 (0.00) 0 (0.00) 0 (0.00) 0 (0.00) 0 (0.00) 0 (0.00) 0 (0.00) 0 (0.00) 1 (0.56) 0 (0.00) 4 (0.24)
86–90 3 (0.05) 0 (0.00) 0 (0.00) 1 (0.03) 0 (0.00) 0 (0.00) 0 (0.00) 0 (0.00) 0 (0.00) 0 (0.00) 0 (0.00) 0 (0.00) 0 (0.00) 0 (0.00) 2 (0.12)
Total 5,934 (100.00) 17 (2.88) 1 (0.24) 3,160 (53.25) 13 (2.33) 3 (0.51) 3 (0.05) 17 (2.92) 47 (0.79) 188 (3.17) 3 (0.51) 53 (0.89) 178 (3.00) 110 (1.85) 1,639 (27.62)