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Table 6 Antimicrobial susceptibility of 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

Bacterial isolate (N) S/R N (%) Antibiotics tested
CN AK C CIP TC DOX SXT CRO DA E CH MET
S. aureus (40) R S 5 (12.5) 35 (87.5) 1 (2.5) 39 (97.5) 11 (27.5) 29 (72.5) 5 (12.5) 35 (87.5) 18 (45) 22 (55) 11 (27.5) 29 (72.5) 17 (42.5) 23 (57.5) NT 9 (22.5) 31 (77.5) 8 (20) 32 (80) NT 7 (17.5) 33 (82.5)
CoNSa (31) R S 2 (6.5) 29 (93.5) 1 (3.2) 30 (96.8) 9 (29) 22 (71) 3 (9.7) 28 (90.3) 18 (58.1) 13 (41.9) 7 (22.6) 24 (77.4) 21 (67.7) 10 (32.3) NT 12 (38.7) 19 (61.3) 9 (29) 22 (71) NT 14 (45.2) 17 (54.8)
S. pyogenes (5) R S NT NT 2 (40) 3 (60) NT 1 (20) 4 (80) NT NT NT 0 5 (100) 0 5 (100) 0 5 (100) NT
S. pneumoniae (8) R S NT NT 2 (25) 6 (75) NT 4 (50) 4 (50) 2 (25) 6 (75) 3 (37.5) 5 (62.5) NT 1 (12.5) 7 (87.5) 1 (12.5) 7 (87.5) 0 8 (100) NT
Viridans streptococci (7) R S NT NT 3 (42.9) 4 (57.1) NT 2 (28.6) 5 (71.4) NT NT 0 7 (100) NT 1 (14.3) 6 (85.7) 0 7 (100) NT
Enterococcus spp. (8) R S NT NT 4 (50) 4 (50) 1 (12.5) 7 (87.5) 4 (50) 4 (50) 2 (25) 6 (75) NT NT NT 1 (12.5) 7 (87.5) NT NT
N. gonorrhoeae (1) R S NT NT NT 0 1 (100) 0 1 (100) NT NT 0 1 (100) NT NT NT NT
H. influenzae (2) R S NT NT 0 2 (100) 0 2 (100) 0 2 (100) NT 1 (50) 1 (50) NT NT NT 0 2 (100) NT
P. aeruginosa (21) R S 1 (4.8) 20 (95.2) 1 (4.8) 20 (95.2) NT 4 (19) 17 (81) NT NT NT NT NT NT NT NT
K. pneumoniae (7) R S 2 (28.6) 5 (71.4) 1 (14.3) 6 (85.7) 3 (42.9) 4 (57.1) 1 (14.3) 6 (85.7) 5 (71.4) 2 (28.6) 2 (28.6) 5 (71.4) 4 (57.1) 3 (42.9) 3 (42.9) 4 (57.1) NT NT NT NT
Other Klebsiella spp. (5) R S 0 5 (100) 1 (20) 4 (80) 2 (40) 3 (60) 1 (20) 4 (80) 2 (40) 3 (60) 1 (20) 4 (80) 4 (80) 1 (20) 0 5 (100) NT NT NT NT
E. coli (15) R S 3 (20) 12 (80) 2 (13.3) 13 (86.7) 4 (26.7) 11 (73.3) 1 (6.7) 14 (93.3) 8 (53.3) 7 (46.7) 3 (20) 12 (80) 8 (53.3) 7 (46.7) 3 (20) 12 (80) NT NT NT NT
Enterobacter spp. (10) R S 1 (10) 9 (90) 1 (10) 9 (90) 1 (10) 9 (90) 0 10 (100) 6 (60) 4 (40) 5 (50) 5 (50) 4 (40) 6 (60) 2 (20) 8 (80) NT NT NT NT
Citrobacter freundii (4) R S 0 4 (100) 0 4 (100) 2 (50) 2 (50) 1 (25) 3 (75) 3 (75) 1 (25) 2 (50) 2 (50) 1 (25) 3 (75) 0 4 (100) NT NT NT NT
Acinetobacter spp. (5) R S 1 (20) 4 (80) 1 (20) 4 (80) NT 0 5 (100) 3 (60) 2 (40) 3 (60) 2 (40) 4 (80) 1 (20) 0 5 (100) NT NT NT NT
S. marcescens (5) R S 1 (20) 4 (80) 1 (20) 4 (80) 2 (40) 3 (60) 0 5 (100) 1 (20) 4 (80) 1 (20) 4 (80) 2 (40) 3 (60) 1 (20) 4 (80) NT NT NT NT
Proteus spp. (3) R S 0 3 (100) 0 3 (100) 0 3 (100) 0 3 (100) NT NT 1 (33.3) 2 (66.7) 0 3 (100) NT NT NT NT
P. shigelloides (1) R S 0 1 (100) 0 1 (100) 0 1 (100) 0 1 (100) 0 1 (100) 0 1 (100) 0 1 (100) 0 1 (100) NT NT NT NT
Total, N (%) R S 16 (10.9) 131 (89.1) 10 (6.8) 137 (93.2) 45 (29.8) 106 (70.2) 17 (10.8) 141 (89.2) 75 (48.7) 79 (51.3) 39 (28.1) 100 (71.9) 70 (51.3) 66 (48.7) 9 (14.3) 54 (85.7) 22 (26.2) 62 (73.8) 20 (20.2) 79 (79.8) 0 22 (100) 21 (29.6) 50 (70.4)
  1. Notes: S Susceptible, R Resistant, CN Gentamicin, AK Amikacin, C Chloramphenicol, CIP Ciprofloxacin, TC Tetracycline, DOX Doxycycline, SXT Trimethoprim-sulfamethoxazole, CRO Ceftriaxone, DA Clindamycin, E Erythromycin, CH Clarithromycin, MET Methicillin, NT Not tested; a CoNS Coagulase negative staphylococci