Table 2 Antimicrobial resistance of Salmonella serotypes in Guangdong province in 2009 - 2012

Aminoglycosides

Getamicin

302 (66)

32 (65)

131 (57)

10 (71)

14 (12)

13 (12)

11 (6.9)

1 (4.8)

8 (27)

6 (40)

3 (11)

3 (27)

Streptomycin

335 (73)

36 (74)

154 (67)

9 (64)

44 (36)

41 (39)

22 (14)

1 (4.8)

10 (33)

7 (47)

13 (46)

6 (54)

Cephalosporins

Cefepime

71 (15)

3 (6.1)

29 (13)

1 (7.1)

14 (12)

6 (5.7)

9 (5.6)

0 (0.0)

3 (10)

0 (0.0)

5 (18)

0 (0.0)

Cefotaxime

67 (14)

5 (10)

30 (13)

0 (0.0)

12 (10)

5 (4.8)

10 (6.3)

1 (4.8)

3 (10)

0 (0.0)

5 (18)

0 (0.0)

Caftazidime

45 (9.8)

2 (4.1)

18 (7.8)

0 (0.0)

7 (5.8)

5 (4.8)

8 (5.0)

1 (4.8)

1 (3.3)

0 (0.0)

3 (11)

0 (0.0)

Penicillins

Ampicillin

412 (89)

35 (71)

215 (93)

11 (79)

68 (56)

59 (56)

18 (11)

3 (14)

12 (40)

6 (40)

21 (75)

8 (73)

Quinolones

Nalidixic acid

383 (83)

37 (76)

167 (73)

13 (93)

94 (78)

89 (85)

17 (11)

1 (4.8)

11 (37)

7 (47)

3 (11)

1 (9.1)

Ciprofloxacin

56 (12)

5 (10)

27 (12)

1 (7.1)

7 (5.8)

7 (6.7)

8 (5.0)

0 (0.0)

1 (3.3)

3 (20)

1 (3.6)

0 (0.0)

Tetracyclines

Tetracycline

402 (87)

34 (69)

214 (93)

13 (93)

32 (26)

28 (27)

22 (14)

1 (4.8)

21 (70)

8 (53)

25 (89)

8 (73)

Amphenicols

Chloramphenicol

335 (73)

28 (57)

154 (67)

9 (64)

5 (4.1)

5 (4.8)

8 (5.0)

2 (9.5)

9 (30)

6 (40)

4 (14)

1 (9.1)

Sulfonamides

Sulfamethoxazole

398 (86)

35 (71)

206 (89)

12 (86)

60 (50)

53 (50)

31 (19)

3 (14)

15 (50)

7 (47)

21 (75)

5 (46)

Trimethoprim

298 (65)

27 (55)

117 (51)

8 (57)

16 (13)

10 (9.5)

10 (6.3)

2 (9.5)

8 (27)

6 (40)

24 (86)

9 (82)

Multi-resistance

≥3 antimicrobials

356 (77)

31 (63)

188 (81)

9 (64)

65 (54)

73 (70)

49 (31)

7 (33)

15 (50)

6 (40)

22 (79)

8 (73)

ACSSuT*

244 (53)

25 (51)

92 (40)

6 (43)

3 (2.5)

3 (2.9)

2 (1.3)

1 (4.8)

6 (20)

4 (27)

3 (11)

1 (9.1)

Weltevreden (n = 38)

Infantis (n = 29)

Thompson (n = 26)

Albany (n = 20)

Agona (n = 20)

Other (n = 364)

Weltevreden (n = 38)

Infantis (n = 29)

Thompson (n = 26)

Albany (n = 20)

Agona (n = 20)

Other (n = 364)

<5 yrs

≥5 yrs

<5 yrs

≥5 yrs

<5 yrs

≥5 yrs

<5 yrs

≥5 yrs

<5 yrs

≥5 yrs

<5 yrs

≥5 yrs

N (%)

N (%)

N (%)

N (%)

N (%)

N (%)

N (%)

N (%)

N (%)

N (%)

N (%)

N (%)

Aminoglycosides

Getamicin

3 (23)

1 (4.2)

2 (10)

2 (29)

2 (10)

1 (25)

3 (27)

1 (11)

4 (29)

1 (17)

37 (17)

19 (16)

Streptomycin

3 (23)

3 (12)

2 (10)

2 (29)

12 (63)

3 (75)

3 (27)

3 (33)

4 (29)

2 (33)

61 (28)

37 (32)

Cephalosporins

Cefepime

3 (23)

1 (4.2)

2 (10)

2 (29)

1 (5.3)

1 (25)

4 (36)

1 (11)

3 (21)

1 (17)

20 (9.0)

19 (16)

Cefotaxime

2 (15)

0 (0.0)

3 (15)

0 (0.0)

5 (26)

1 (25)

4 (36)

0 (0.0)

2 (14)

0 (0.0)

0 (0.0)

9 (7.7)

Caftazidime

2 (15)

0 (0.0)

2 (10)

0 (0.0)

6 (32)

1 (25)

3 (27)

0 (0.0)

2 (14)

1 (17)

16 (7.2)

7 (6.0)

Penicillins

Ampicillin

1 (7.7)

2 (8.3)

16 (80)

6 (86)

12 (63)

1 (25)

11 (100)

9 (100)

3 (21)

2 (33)

79 (36)

33 (28)

Quinolones

Nalidixic acid

2 (15)

2 (8.3)

16 (80)

5 (71)

5 (26)

2 (50)

9 (82)

9 (100)

4 (29)

0 (0.0)

71 (32)

36 (31)

Ciprofloxacin

0 (0.0)

1 (4.2)

0 (0.0)

0 (0.0)

0 (0.0)

2 (50)

1 (9.1)

0 (0.0)

3 (21)

1 (17)

19 (8.6)

4 (3.4)

Tetracyclines

Tetracycline

2 (15)

4 (17)

11 (55)

6 (86)

13 (68)

2 (50)

9 (82)

9 (100)

6 (43)

2 (33)

82 (37)

52 (44)

Amphenicols

Chloramphenicol

0 (0.0)

2 (8.3)

12 (60)

6 (86)

7 (37)

2 (50)

9 (82)

9 (100)

3 (21)

2 (33)

45 (20)

16 (14)

Sulfonamides

Sulfamethoxazole

3 (23)

5 (21)

15 (75)

6 (86)

14 (74)

2 (50)

10 (91)

9 (100)

3 (21)

1 (17)

79 (36)

50 (43)

Trimethoprim

1 (7.7)

3 (12)

13 (65)

4 (57)

8 (42)

2 (50)

9 (82)

9 (100)

2 (14)

1 (17)

51 (23)

37 (32)

Multi-resistance

≥3 antimicrobials

4 (31)

12 (50)

13 (65)

3 (43)

16 (84)

4 (100)

9 (82)

8 (89)

5 (36)

4 (67)

106 (48)

62 (53)

ACSSuT*

0 (0.0)

0 (0.0)

1 (5.0)

2 (29)

6 (32)

1 (25)

3 (27)

3 (33)

1 (7.1)

1 (17)

25 (11)

12 (10)