Table 5. Antimicrobial susceptibility for methicillin-resistant Staphylococcus aureus (MRSA) colonizing isolates in Taiwanese children, 2004-2009.
| Origin, no. (%) | Year, no. (%) | Clonal type, no. (%) | ||||||
| Characteristic | H | K | 2004–2006 | 2007–2009 | ST59 | ST338 | p a | |
| Total isolates | 91 (24.5) | 280 (75.5) | 131 (35.3) | 240 (64.7) | 320 (86.3) | 16 (4.3) | ||
| Resistance to | ||||||||
| Clindamycin | 80 (87.9) | 251 (89.6) | 116 (88.5) | 215 (89.6) | 271 (84.7) | 16 (100) | 0.142 | |
| Erythromycin | 82 (90.1) | 259 (92.5) | 121 (92.4) | 220 (91.7) | 288 (90.0) | 16 (100) | 0.380 | |
| Gentamicin | 14 (15.4) | 30 (10.7) | 13 (9.9) | 31 (12.9) | 30 (9.4) | 9 (56.3) | <0.0001 | |
| TMP-SMX | 2 (2.2) | 5 (1.8) | 0 (0) | 7 (2.9) | 2 (0.6) | 5 (31.3) | <0.0001 | |
| Ciprofloxacin | 0 (0) | 0 (0) | 0 (0) | 0 (0) | 0 (0) | 0 (0) | ||
| Fusidic acid | 0 (0) | 0 (0) | 0 (0) | 0 (0) | 0 (0) | 0 (0) | ||
| Mupirocin | 1 (1.1) | 0 (0) | 0 (0) | 1 (0.4) | 1 (0.3) | 0 (0) | 0.999 | |
| Rifampin | 1 (1.1) | 2 (0.7) | 0 (0) | 3 (1.3) | 3 (0.9) | 0 (0) | 0.999 | |
| Vancomycin | 0 (0) | 0 (0) | 0 (0) | 0 (0) | 0 (0) | 0 (0) | ||
| Teicoplanin | 0 (0) | 0 (0) | 0 (0) | 0 (0) | 0 (0) | 0 (0) | ||
| Multidrugb | 14 (15.4) | 36 (12.9) | 11 (8.4) | 39 (16.3)c | 32 (10.0) | 10 (62.5) | <0.0001 | |
H, Health maintenance visits; K, Kindergartens; ST, sequence type; TMP-SMX, trimethoprim-sulfamethoxazole.
a
p value derived from comparison of isolates of ST59 and ST338 clonal type (chi-square test, unless otherwise indicated).
b
Multiresistance to at least 3 of the 10 non-β-lactam antimicrobial agents tested.
c
p<0.05 across surveys (2004–2006 vs. 2007–2009, Fisher's exact test).