Table 5.
Multidrug Resistance Patterns of Bacteria Isolated from Patients with Ear Infection at the UoGCSH from Jan 2013 to Dec 2018
| Bacterial Isolates | Antibiotic Resistance (%) | MDR (%) | ||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| R0 | R1 | R2 | R3 | R4 | R5 | R6 | ||||||||||
| GPB | S. aureus (n =75) | 9 (12) | 17 (16) | 18 (24) | 16 (21.3) | 8 (10.67) | 5 (6.67) | 2 (2.67) | 31 (41.3) | |||||||
| CoNS (n = 8) | 1 (12.5) | 4 (50) | 1 (12.5) | 2 (25) | – | – | – | 2 (25) | ||||||||
| S. pyogenes (n = 12) | 3 (25) | 4 (33.3) | 2 (16.67) | 3 (25) | – | – | – | 3 (25) | ||||||||
| S. pneumoniae (n = 5) | – | 4 (80) | 1 (20) | – | – | – | – | 0 (0.0) | ||||||||
| V. streptococci (n = 5) | – | 1 (20) | 1 (20) | 2 (40) | 1 (20) | – | – | 3 (60) | ||||||||
| Other strep spps (n = 5) | 1 (20) | – | 1 (20) | 2 (40) | 1 (20) | – | – | 3 (60) | ||||||||
| Total (n = 110) | 14 (12.7) | 30 (27.3) | 24 (21.8) | 25 (22.7) | 10 (9.1) | 5 (4.5) | 2 (1.8) | 42 (38.2) | ||||||||
| GNB | P. mirabilis (n = 28) | 1 (3.57) | 6 (21.43) | 9 (32.14) | 7 (25) | 4 (14.3) | 1 (3.57) | – | 12 (42.86) | |||||||
| P. vulgaris (n = 23) | 1 (4.35) | 3 (13) | 3 (13) | 8 (34.78) | 4 (17.4) | 4 (17.4) | – | 16 (69.57) | ||||||||
| Other Proteus spps (n = 5) | – | 1 (20) | 2 (40) | – | 1 (20) | 1 (20) | – | 2 (40) | ||||||||
| P. aeruginosa (n = 19) | – | 2 (10.53) | 6 (31.58) | 9 (47.37) | 2 (10.53) | – | – | 11 (57.9) | ||||||||
| Other Pseudomonas spps (n = 5) | – | 1 (20) | 1 (20) | 2 (40) | 1 (20) | – | – | 3 (60) | ||||||||
| E. coli (n =20) | 2 (10) | 3 (15) | 4 (20) | 5 (25) | 3 (15) | 2 (10) | 1 (5) | 11 (55) | ||||||||
| K. pneumoniae (n = 11) | 2 (18.2) | 4 (36.36) | 2 (18.2) | 2 (18.2) | – | 1 (9.1) | – | 3 (27.3) | ||||||||
| Other Klebsiella spps (n = 4) | – | – | 2 (50) | 1 (25) | 1 (25) | – | – | 2 (50) | ||||||||
| Citrobacter spps (n = 15) | – | 5 (33.3) | 3 (20) | 4 (26.67) | 1 (6.67) | 1 (6.67) | 1 (6.67) | 7 (46.7) | ||||||||
| Other LF G–ve rods (n = 11) | 2 (18.2) | 4 (36.36) | 1 (9.1) | 2 (18.2) | 1 (9.1) | 1 (9.1) | – | 4 (36.4) | ||||||||
| Other NLF G–ve rods (n = 11) | – | 1 (9.1) | 2 (18.2) | 6 (54.55) | 1 (9.1) | 1 (9.1) | – | 8 (72.7) | ||||||||
| Salmonella spps (n = 5) | 1 (20) | 2 (40) | – | – | 2 (40) | – | – | 2 (40) | ||||||||
| H. influenzae (n = 2) | 1 (50) | 1 (50) | – | – | – | – | – | 0 (0.0) | ||||||||
| Total (n = 159) | 10 (6.3) | 33 (20.8) | 35 (22) | 46 (28.9) | 21 (13.2) | 12 (7.5) | 2 (1.3) | 81 (50.9) | ||||||||
| Grand total (269) | 24 (8.9) | 63 (23.4) | 59 (21.9) | 71 (26.4) | 31 (11.5) | 17 (6.3) | 4 (1.5) | 123 (45.72) | ||||||||
Notes: R0, R1, R2, R3, R4, R5, and R6 stands for resistance of the isolates for none, one, two, three, four, five, and six antibiotic classes tested in this study, respectively. MDR = ≥R3.
Abbreviations: CoNS, coagulase negative Staphylococci; LF, lactose fermenter; NLF, non-lactose fermenter; G-ve, Gram-negative; MDR, multidrug resistant.