Table 3.
Phenotypic and genetic characteristics of multidrug-resistant Staphylococcus aureus isolates between mothers and their newborn infants in Shenzhen, 2015 [n (%)].
| Characteristics | Mothers | Infants | χ2 | P-value |
|---|---|---|---|---|
| (n = 86) | (n = 23) | |||
| RESISTANCE PHENOTYPE (RESISTANT) | ||||
| Cefoxitin | 23 (26.7) | 11 (47.8) | 3.758 | 0.053 |
| Erythromycin | 63 (73.3) | 21 (91.3) | 3.344 | 0.067 |
| Penicillin | 84 (97.7) | 22 (95.7) | NA | 0.513a |
| Gentamicin | 11 (12.8) | 5 (21.7) | NA | 0.322a |
| Clindamycin | 55 (64.0) | 16 (69.6) | 0.252 | 0.616 |
| Rifampicin | 2 (2.3) | 5 (21.7) | NA | 0.004a |
| Linezolid | 5 (5.8) | 2 (8.7) | NA | 0.637a |
| Moxifloxacin | 17 (19.8) | 3 (13.0) | NA | 0.558a |
| Trimethoprim-sulfamethoxazole | 18 (20.9) | 7 (30.4) | 0.928 | 0.336a |
| Tobramycin | 33 (38.4) | 5 (21.7) | 2.211 | 0.137 |
| VIRULENCE GENE (POSITIVE) | ||||
| Pvl | 3 (3.5) | 1 (4.4) | NA | 1.000a |
| Tst | 2 (2.3) | 0 (0.0) | NA | 1.000a |
| Eta | 1 (1.2) | 2 (8.7) | NA | 0.112a |
| Etb | 0 (0.0) | 0 (0.0) | NA | NAb |
MDR S. aureus, multidrug-resistant Staphylococcus aureus; n, number of isolates; Pvl, panton-valentine leukocidin; Tst, toxic shock syndrome toxin; Eta, exfoliative toxin A; Etb, exfoliative toxin B; NA, not applicable.
a
The P-values were calculated with the Fisher's exact test.
b
No estimate of the P-value is provided owing to the lack of occurrence of the outcome of interest in at least one group.