Table 1.
Results From Environmental Sampling Organized by Sample Type
| Taqman Results | Culture Resultsa | ||||||||
|---|---|---|---|---|---|---|---|---|---|
| Positive/Total | Interpolated cells/100 cm2 | Positive /Total | CFU/100 cm2 | ||||||
| Sample Type | Mean | Min | Max | Broth | Plates | Mean | Min | Max | |
| Window | 9/12 | 8.2 × 103 | 660 | 3.2 × 104 | 6/12 | 6/12 | 80 | 4.7 | 410 |
| Indoor knob | 7/12 | 4.6 × 103 | 460 | 1.5 × 105 | 3/12 | 2/12 | 2.9 | 2.4 | 3.4 |
| Outdoor knob | 3/12 | 1.2 × 103 | 840 | 1.8 × 103 | 3/12 | 1/12 | 350 | - | - |
| Left handrail | 26/32 | 5.1 × 104 | 570 | 3.7 × 105 | 18/32 | 17/32 | 58 | 2.7 | 270 |
| Right handrail | 25/32 | 5.4 × 104 | 590 | 4.5 × 105 | 20/32 | 18/32 | 120 | 3.3 | 970 |
| Total | 70/100 | 4.0 × 104 | 460 | 4.5 × 105 | 50/100 | 44/100 | 92 | 2.4 | 970 |
Abbreviation: CFU, colony-forming unit.
aEach sample was cultured using both the qualitative enrichment broth method as well as quantitative dilution plating. The summary statistics provided by culture reflect results from the quantitative dilution plating.