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Table 2 Distribution of Shigella spp. by Months in Beijing from 1994 to 2010

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

Surveillance time

No. (%) of isolates

Total

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

1994

620

(10.34)

5

(0.81)

3

(0.48)

3

(0.48)

2

(0.32)

12

(1.94)

56

(9.03)

165

(26.61)

178

(28.71)

122

(19.68)

42

(6.77)

23

(3.71)

9

(1.45)

1995

793

(13.22)

10

(1.26)

3

(0.38)

11

(1.39)

16

(2.02)

49

(6.18)

132

(16.65)

239

(30.14)

166

(20.93)

76

(9.58)

46

(5.80)

38

(4.79)

7

(0.88)

1996

1196

(19.94)

25

(2.09)

12

(1.00)

9

(0.75)

5

(0.42)

45

(3.76)

125

(10.45)

376

(31.44)

317

(26.51)

185

(15.47)

61

(5.10)

16

(1.34)

20

(1.67)

1997

481

(8.02)

15

(3.12)

5

(1.04)

11

(2.29)

19

(3.95)

55

(11.43)

76

(15.80)

85

(17.67)

66

(13.72)

68

(14.14)

52

(10.81)

15

(3.12)

14

(2.91)

1998

602

(10.04)

4

(0.66)

5

(0.83)

4

(0.66)

10

(1.66)

39

(6.48)

82

(13.62)

108

(17.94)

136

(22.59)

94

(15.61)

83

(13.79)

24

(3.99)

13

(2.16)

1999

477

(7.95)

3

(0.63)

5

(1.05)

3

(0.63)

7

(1.47)

17

(3.56)

63

(13.21)

109

(22.85)

129

(27.04)

80

(16.77)

29

(6.08)

26

(5.45)

6

(1.26)

2000

437

(7.28)

4

(0.92)

2

(0.46)

2

(0.46)

2

(0.46)

11

(2.52)

44

(10.07)

101

(23.11)

154

(35.24)

85

(19.45)

29

(6.64)

0

(0.00)

3

(0.69)

2001

221

(3.68)

0

(0.00)

1

(0.45)

2

(0.90)

1

(0.45)

1

(0.45)

8

(3.62)

41

(18.55)

139

(62.90)

26

(11.76)

2

(0.90)

0

(0.00)

0

(0.00)

2002

399

(6.65)

8

(2.01)

5

(1.25)

17

(4.26)

20

(5.01)

19

(4.76)

49

(12.28)

82

(20.55)

88

(22.06)

65

(16.29)

26

(6.52)

13

(3.26)

7

(1.75)

2003

94

(1.57)

0

(0.00)

1

(1.06)

2

(2.13)

0

(0.00)

1

(1.06)

5

(5.32)

15

(15.96)

24

(25.53)

29

(30.85)

13

(13.83)

2

(2.13)

2

(2.13)

2004

252

(4.20)

1

(0.40)

0

(0.00)

0

(0.00)

0

(0.00)

5

(1.98)

12

(4.76)

56

(22.22)

102

(40.48)

48

(19.05)

18

(7.14)

5

(1.98)

5

(1.98)

2005

148

(2.47)

4

(2.70)

1

(0.68)

3

(2.03)

0

(0.00)

0

(0.00)

1

(0.68)

24

(16.22)

53

(35.81)

39

(26.35)

15

(10.14)

6

(4.05)

2

(1.35)

2006

117

(1.95)

0

(0.00)

0

(0.00)

2

(1.71)

0

(0.00)

4

(3.42)

2

(1.71)

21

(17.95)

41

(35.04)

28

(23.93)

17

(14.53)

2

(1.71)

0

(0.00)

2007

78

(1.30)

1

(1.28)

2

(2.56)

0

(0.00)

1

(1.28)

1

(1.28)

3

(3.85)

17

(21.79)

38

(48.72)

10

(12.82)

3

(3.85)

0

(0.00)

2

(2.56)

2008

22

(0.37)

1

(4.55)

0

(0.00)

0

(0.00)

1

(4.55)

0

(0.00)

1

(4.55)

1

(4.55)

6

(27.27)

12

(54.55)

0

(0.00)

0

(0.00)

0

(0.00)

2009

36

(0.60)

0

(0.00)

0

(0.00)

2

(5.56)

6

(16.67)

0

(0.00)

1

(2.78)

1

(2.78)

16

(44.44)

7

(19.44)

2

(5.56)

0

(0.00)

1

(2.78)

2010

26

(0.43)

1

(3.85)

1

(3.85)

1

(3.85)

1

(3.85)

1

(3.85)

6

(23.08)

1

(3.85)

7

(26.92)

4

(15.38)

2

(7.69)

0

(0.00)

1

(3.85)

Total

5,999

(100.00)

82

(1.37)

46

(0.77)

72

(1.20)

91

(1.52)

260

(4.33)

666

(11.10)

1442

(24.04)

1660

(27.67)

978

(16.30)

440

(7.33)

170

(2.83)

92

(1.53)