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Table 7 Level of antimicrobial resistance in bacteria isolated from ocular infections

From: Ocular bacterial infections at Quiha Ophthalmic Hospital, Northern Ethiopia: an evaluation according to the risk factors and the antimicrobial susceptibility of bacterial isolates

Type of bacterial isolate

Level of resistance N (%)

Total

R0

R1

R2

R3

R4

Gram-positive

S. aureus

7 (17.5)

8 (20)

6 (15)

7 (17.5)

12 (30)

40 (100)

CoNSa

4 (12.9)

6 (19.4)

5 (16.1)

0

16 (51.6)

31 (100)

S. pyogenes

3 (60)

2 (40)

0

0

0

5 (100)

S. pneumoniae

1 (12.5)

2 (25)

4 (50)

0

1 (12.5)

8 (100)

Viridans streptococci

2 (28.6)

2 (28.6)

2 (28.6)

1 (14.3)

0

7 (100)

Enterococcus spp.

2 (25)

1 (12.5)

4 (50)

1 (12.5)

0

8 (100)

Total

19 (19.2)

21 (21.2)

21 (21.2)

9 (9)

29 (29.3)

99 (100)

Gram-negative

N. gonorrhoeae

1 (100)

0

0

0

0

1 (100)

H. influenzae

1 (50)

1 (50)

0

0

0

2 (100)

P. aeruginosa

10 (47.6)

9 (42.9)

2 (9.5)

0

0

21 (100)

K. pneumoniae

0

0

1 (14.3)

5 (71.4)

1 (14.3)

7 (100)

Other Klebsiella spp.

0

2 (40)

1 (20)

1 (20)

1 (20)

5 (100)

E. coli

5 (33.3)

2 (13.3)

1 (6.7)

1 (6.7)

6 (40)

15 (100)

Enterobacter spp.

2 (20)

2 (20)

3 (30)

1 (10)

2 (20)

10 (100)

Citrobacter freundii

1 (25)

0

1 (25)

1 (25)

1 (25)

4 (100)

S. marcescens

2 (40)

1 (20)

0

1 (20)

1 (20)

5 (100)

P. shigelloides

1 (100)

0

0

0

0

1 (100)

Proteus spp.

0

0

2 (66.7)

1 (33.3)

0

3 (100)

Acinetobacter spp.

0

2 (40)

1 (20)

1 (20)

1 (20)

5 (100)

Total

23 (29.1)

19 (24)

13 (16.5)

11 (13.9)

13 (16.5)

79 (100)

Grand Total

42 (23.6)

40 (22.5)

34 (19.1)

20 (11)

42 (23.5)

178 (100)

  1. Notes: R0 Susceptible to all tested antimicrobials, R1 Resistant to one antimicrobial, R2 Resistant to two antimicrobials, R3 Resistant to three antimicrobials, R4 Resistant to four or more antimicrobials; a CoNS Coagulase negative staphylococci