Antimicrobial agents

Resistance ratios, % (no. resistant strains)

Clinical strains

p-value

Environmental strains

p-value

All

ESBL

(n = 13)

Non-ESBL

(n = 24)

All

ESBL

(n = 4)

Non-ESBL

(n = 95)

Amoxicillin/clavulanic acid

81.08 (30)

100 (13)

70.83 (17)

0.03

40.40 (40)

100 (4)

37.89 (36)

0.02

Ciprofloxacin

45.95 (17)

92.3 (12)

20.83 (5)

<0.0001

40.40 (40)

100 (4)

37.89 (36)

0.02

Ceftriaxon

35.14 (13)

100 (13)

0

<0.0001

4.04 (4)

100 (4)

0

<0.0001

Ceftazidime

35.14 (13)

100 (13)

0

<0.0001

4.04 (4)

100 (4)

0

<0.0001

Cefotaxime

35.14 (13)

100 (13)

0

<0.0001

4.04 (4)

100 (4)

0

<0.0001

Cephalothin

81.08 (30)

100 (13)

70.83 (17)

0.03

40.40 (40)

100 (4)

37.89 (36)

0.02

Cefoxitin

16.22 (6)

38.5 (5)

4.16 (1)

0.01

13.13 (13)

25 (1)

12.63 (12)

NS

Imipenem

0

0

0

-

0

0

0

-

Ertapenem

0

0

0

-

1.01 (1)

25 (1)

0

0.04

Aztreonam

35.14 (13)

100 (13)

0

<0.0001

0

0

0

-

Amikacin

0

0

0

-

0

0

0

-

Gentamicin

32.43 (12)

84.6 (11)

4.16 (1)

<0.0001

32.43 (28)

100 (4)

25.26 (24)

0.005

Cotrimoxazole

48.65 (18)

61.5 (8)

41.66 (10)

NS

48.65 (38)

50 (2)

37.89 (36)

NS