Table 6.
Antimicrobial susceptibility of bacteria isolated from ocular infections
| 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) |
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