Table 4.
Distribution of antimicrobial resistance profiles of methicillin-susceptible and methicillin-resistant Staphylococcus aureus isolated from the anterior nares of healthcare workers and students attending the University Hospital of Londrina in southern Brazil.
| Group | Antimicrobial resistance profile | Number of isolates | ||
|---|---|---|---|---|
| MSSA, n = 93 | MRSA, n = 40 | Total, ∗N = 139 (%) | ||
| 1 | STX | 1 | — | 1 (0.7) |
| 2 | TE | 1 | — | 1 (0.7) |
| 3 | P | 27 | 3 | 30 (21.6) |
| 4 | P, CLO | 1 | — | 1 (0.7) |
| 5 | P, CN | 1 | — | 1 (0.7) |
| 6 | P, STX | 2 | — | 2 (1.4) |
| 7 | P, E | 5 | 1 | 6 (4.3) |
| 8 | P, DA | 1 | — | 1 (0.7) |
| 9 | E, DA | 5 | — | 5 (3.6) |
| 10 | P, E, FOX | — | 1 | 1 (0.7) |
| 11 | P, FOX, OX | — | 1 | 1 (0.7) |
| 12 | P, E, STX | 1 | 1 | 2 (1.4) |
| 13 | P, E, CIP | 1 | — | 1 (0.7) |
| 14 | P, E, DA | 32 | 11 | 43 (30.9) |
| 15 | P, E, CN | 1 | — | 1 (0.7) |
| 16 | P, DA, FOX | — | 1 | 1 (0.7) |
| 17 | P, CIP, RD | 1 | — | 1 (0.7) |
| 18 | P, E, DA, FOX | — | 3 | 3 (2.2) |
| 19 | P, E, DA, OX | — | 7 | 7 (5.0) |
| 20 | P, E, DA, STX | 3 | 1 | 4 (2.9) |
| 21 | P, E, DA, CIP | 2 | — | 2 (1.4) |
| 22 | P, E, DA, CN | 2 | — | 2 (1.4) |
| 23 | P, E, DA, TE | 1 | — | 1 (0.7) |
| 24 | P, E, STX, TE | — | 1 | 1 (0.7) |
| 25 | P, E, DA, FOX, OX | — | 1 | 1 (0.7) |
| 26 | P, E, DA, STX, TGC | 1 | — | 1 (0.7) |
| 27 | P, E, DA, CN, TE | 1 | — | 1 (0.7) |
| 28 | P, E, DA, FOX, CIP | — | 1 | 1 (0.7) |
| 29 | P, E, DA, FOX, CN | — | 1 | 1 (0.7) |
| 30 | P, E, STX, CIP, TE | 1 | — | 1 (0.7) |
| 31 | P, E, DA, STX, CN | 1 | — | 1 (0.7) |
| 32 | P, E, DA, FOX, OX, CN | — | 1 | 1 (0.7) |
| 33 | P, E, DA, FOX, OX, LZD | — | 1 | 1 (0.7) |
| 34 | P, E, DA, FOX, CIP, CN | — | 1 | 1 (0.7) |
| 35 | P, E, DA, FOX, CN, TE | — | 1 | 1 (0.7) |
| 36 | P, E, DA, FOX, CIP, CN, TE | — | 1 | 1 (0.7) |
| 37 | P, E, DA, FOX, OX, CIP, CLO | — | 1 | 1 (0.7) |
| 38 | P, E, DA, STX, CN, CIP, CLO, TE | 1 | — | 1 (0.7) |
∗Six isolates were susceptible to all antimicrobial tested. P: penicillin (10 U); FOX: cefoxitin (30 µg); CLO: chloramphenicol (30 µg); CIP: ciprofloxacin (5 µg); DA: clindamycin (2 µg); E: erythromycin (15 µg); CN: gentamicin (10 µg); LZD: linezolid (30 µg); RD: rifampicin (5 µg) STX: sulfamethoxazole/trimethoprim (23.75/1.25 µg); TE: tetracycline (30 µg); TGC: tigecycline (15 µg). —: not detected.