Using MALDI-TOF Mass Spectrometry to Identify Drug Resistant Staphylococcal Isolates from Nonhospital Environments in Brunei Darussalam

Table 2

Resistance profiles and molecular characterisation of antibiotic resistant staphylococci isolated from 24 different sampling spots from 4 locations (A, B, C, and D).

Species

Ss/L

C

Cl

Cp

E

Fa

G

N

P

O

S

SMX

T

TM

O MIC

mecA

S. epidermis

1 A

1

R

R

R

R

S. haemolyticus

2 A

1

R

R

R

R

R

R

0.5

+

S. hominis

3 A

1

R

R

R

R

R

S. saprophyticus

3 A

1

R

R

R

R

R

S. warneri

4 A

1

R

R

R

R

R

S. capitis

5 A

1

R

R

R

R

R

S. epidermis

6 A

1

R

R

R

R

2

+

S. haemolyticus

7 A

1

R

R

R

R

R

R

S. hominis

8 A

1

R

R

R

R

S. saprophyticus

9 A

1

R

R

R

R

S. haemolyticus

10 A

1

R

R

R

R

S. saprophyticus

11 A

1

R

R

R

R

S. arlettae

12 B

1

R

R

R

R

S. aureus

13 B

1

R

R

S. capitis

14 B

1

R

S. cohnii

15 B

2

R

R

R

R

R

R

R

S. aureus

16 B

1

R

R

S. capitis

17 C

1

R

R

S. hominis

18 C

1

R

R

R

S. hominis

19 C

1

R

R

R

R

S. hominis

20 C

1

R

R

R

R

R

S. epidermis

21 D

1

R

R

S. pasteuri

22 D

1

R

S. hominis

23 D

1

R

R

R

S. saprophyticus

24 D

1

R

R

R

R

R

: similar isolates from each sampling spot but different sites.
Ss/L: sampling spot/location codes A, B, C, and D.
Cp: ciprofloxacin; Cl: clindamycin; C: chloramphenicol; E: erythromycin; Fa: fusidic acid; G: gentamicin; N: novobiocin; O: oxacillin; P: penicillin; SMX: sulfamethoxazole; S: streptomycin; T: tetracycline; TM: trimethoprim.
O MIC: minimum inhibitory concentration to oxacillin (µg/mL).