Interdisciplinary Perspectives on Infectious Diseases

Research Article

Nasal Carriage by Staphylococcus aureus among Healthcare Workers and Students Attending a University Hospital in Southern Brazil: Prevalence, Phenotypic, and Molecular Characteristics

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
Group	Antimicrobial resistance profile	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.