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Table 3 Antimicrobial resistance pattern of bacterial isolates from ear discharge samples of study participants at Ayder referral hospital, North Ethiopia (November 2014–June 2015)

From: Bacterial profile and antimicrobial susceptibility patterns of otitis media in Ayder Teaching and Referral Hospital, Mekelle University, Northern Ethiopia

Bacterial isolates

Resistance pattern of antimicrobial agents (R %)

AMC

CRO

CN

DO

CIP

SXT

NOR

E

AML

T

P

F

S. aureus (n = 46)

28 (60.9)

31 (67.4)

19 (41.3)

29 (63)

10 (21)

31 (67.4)

20 (43.5)

18 (39)

46 (100)

46 (100)

46 (100)

NA

CoNS (n = 17)

13 (76.5)

4 (23.5)

6 (35.3)

11 (64.7)

9 (52.9)

17 (100)

6 (35.3)

10 (59)

17 (100)

15 (88)

13 (76.5)

NA

S. pneumoniae (n = 15)

14 (93)

9 (60)

3 (20)

14 (93)

3 (20)

12 (80)

12 (80)

7 (47)

13 (86.7)

15 (100)

14 (93)

NA

S. Pyrogenes (n = 16)

10 (62.5)

9 (56.3)

4 (25)

6 (40)

3 (20)

14 (87.5)

4 (25)

4 (25)

13 (81.3)

12 (75)

11 (68.8)

NA

P. mirabilis (n = 39)

26 (66.7)

14 (35.9)

7 (17.9)

25 (64)

– (0)

25 (64)

(0)

NA

25 (64)

26 (66.7)

26 (66.7)

26 (66.7)

P. aeruginosa (n = 27)

24 (88.9)

17 (62.3)

17 (62.3)

25 (93.6)

10 (37)

19 (70.4)

17 (62.3)

NA

27 (100)

27 (100)

26 (96.3)

27 (100)

Klebsiella spp. (n = 18)

13 (72.2)

8 (44.4)

7 (38.9)

11 (61.1)

2 (11)

14 (77.8)

9 (50)

NA

16 (88.9)

16 (88.9)

17 (94.4)

10 (55.6)

E. colin (n = 6)

3 (50)

4 (66.7)

1 (16.7)

5 (83.3)

1 (16.7)

4 (66.7)

1 (16.7)

NA

5 (83.3)

3 (50)

2 (33.3)

5 (83.3)

H. influenzae (n = 16)

9 (53.6)

5 (31.3)

3 (18.8)

8 (50)

2 (12.5)

9 (53.6)

4 (25)

NA

11 (68.8)

9 (53.6)

13 (81.3)

12 (68.8)

Providentiae spp. (n = 8)

6 (75)

3 (37.5)

3 (37.5)

7 (87.5)

0

8 (100)

1 (12.5)

NA

6 (75)

8 (100)

5 (62.5)

4 (500)

P. vulgaris (n = 7)

3 (42.9)

3 (42.9)

0

1 (12.3)

0

4 (57)

0

NA

6 (85.7)

5 (71.4)

6 (85.7)

3 (42.9)

  1. AMC amoxicillin clavulanic acid, CRO ceftriaxone, CN gentamicin, DO doxycycline, CIP ciprofloxacin, SXT trimethoprim-sulphamethoxazole, E erythromycin, OX oxacillin, NOR norfloxacin, F nitrofurantonin, T tetracycline, AML ampicillin, P penicillin, NA not applicable