High prevalence of ST5-SCCmec II-t311 clone of methicillin-resistant Staphylococcus aureus isolated from bloodstream infections in East China

Table 2 The antibiotic resistance rates of 263 MRSA isolates

Antibiotics^a	Total (n ^b = 263); R^c	ST5-II-t311 (n = 110); R	Other isolates (n = 153); R	P-value^d
OXA	263; 100.0%	110; 100.0%	153; 100%	> 0.05
PEN	263; 100.0%	110; 100.0%	153; 100%	> 0.05
ERY	214; 81.4%	104; 94.5%	110; 71.9%	< 0.05
CLN	123; 46.8%	40; 36.4%	83; 54.2%	< 0.05
SXT	4; 1.5%	1; 0.9%	3; 2.0%	> 0.05
TCY	97; 36.9%	61; 55.5%	36; 23.5%	< 0.05
VAN	0; 0.0%	0; 0.0%	0; 0.0%	> 0.05
RIF	3; 1.4%	0; 0.0%	3; 2.0%	> 0.05
CIP	150; 57.0%	85; 77.3%	65; 42.5%	< 0.05
LVX	168; 63.9%	104; 94.5%	64; 41.8%	< 0.05
MFX	161; 61.2%	105; 95.5%	56; 36.6%	< 0.05
AMK	2; 0.8%	1; 0.9%	1; 0.7%	> 0.05
TGC	9; 3.4%	6; 5.5%	3;2.0%	> 0.05
LNZ	0; 0.0%	0; 0.0%	0; 0.0%	> 0.05
DAP	0; 0.0%	0; 0.0%	0; 0.0%	> 0.05

^aOxacillin (OXA), penicillin (PEN), erythromycin (ERY), clindamycin (CLN), trimethoprim-sulfamethoxazole (SXT), tetracycline (TCY), vancomycin (VAN), rifampicin (RIF), ciprofloxacin (CIP), levofloxacin (LVX), moxifloxacin (MFX), amikacin (AMK), tigecycline (TGC), linezolid (LNZ), daptomycin (DAP)
^b n number of isolates in each type
^c R resistance
^dThe resistance rates of antimicrobials among ST5-II-t311 isolates were compared to those among Non-ST5-II-t311 isolates. P < 0.05 was considered statistically significant

ISSN: 1471-2180