Table 2. Antibiotic resistance rates of Gram-positive cocci isolated from health care workers’ cell phones.
| Resistance to category/agent | Staphylococcus aureus (n=30) | Enterococcus spp. (n=26) | χ2 | p-value* | |
|---|---|---|---|---|---|
| Penicillin | 93.3 (28/30) | 30.8 (8/26) | 23.8 | <0.001 | |
| Vancomycin | 0.0 (0/30) | 42.3 (11/26) | 15.8 | <0.001 | |
| Erythromycin | 40.0 (12/30) | 92.3 (24/26) | 16.6 | <0.001 | |
| Ciprofloxacin | 23.3 (7/30) | 46.2 (12/26) | 3.24 | 0.072 | |
| Chloramphenicol | 0.0 (0/30) | 15.4 (4/26) | 4.97 | 0.026 | |
| Rifampicin | 13.3 (4/30) | 73.1 (19/26) | 20.5 | <0.001 | |
| Linezolid | 0.0 (0/30) | 30.8 (8/26) | 10.8 | 0.001 | |
| MDR Resistance to categories | Yes | 46.7 (14/30)€ | 80.8 (21/26) | 6.91 | 0.009 |
| Resistance to categories | median (min-max) | 2 (0-5)¥ | 5 (1-7) | - | <0.001£ |
MDR – multidrug resistance
Note: Values are % (n/N).
*
All p-values were calculated using the Chi2 test.
€
8 MRSA isolates + 6 non-MRSA that were MDR.
¥
Includes all the antimicrobial categories listed plus aminoglycoside (gentamicin) and lincosamides (clindamycin).
£
p-value calculated using the Mann Whitney test, effect size = 0.526.