Table II.
List of air and environmental swab samples and corresponding rRT–PCR and culture results for SARS-CoV-2
| Sample | Patient 1 |
Patient 2 |
Patient 3 |
|||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| PCR |
CT value |
Culture | PCR |
CT value |
Culture | PCR |
CT value |
Culture | ||||
| E gene | RdRp | E gene | RdRp | E gene | RdRp | |||||||
| Air | – | ND | – | ND | – | ND | ||||||
| Air outlet fan | – | ND | – | ND | + | 33.93 | 34.99 | – | ||||
| Air inlet fan | – | ND | – | ND | – | ND | ||||||
| Nasal prong/endotracheal tube | + | 30.95 | 31.36 | + | + | 32.33 | 33.02 | – | + | 31.78 | 34.28 | + |
| Intravenous pole | – | ND | – | ND | – | ND | ||||||
| Computer | – | ND | – | ND | – | ND | ||||||
| Medication cart | – | ND | – | ND | – | ND | ||||||
| Window | – | ND | – | ND | U | U | U | – | ||||
| Window frame | – | ND | – | ND | – | 34.23 | 36.04 | – | ||||
| Blind curtain | – | ND | – | ND | – | ND | ||||||
| Wall 1 | – | ND | – | ND | – | ND | ||||||
| Wall 2 | – | ND | – | ND | – | ND | ||||||
| Floor near the patienta | – | ND | – | ND | + | 30.38 | 33.07 | + | ||||
| Floor far from the patientb | – | ND | – | ND | + | 31.97 | 34.28 | – | ||||
| Bed rails | – | ND | – | ND | + | 30.22 | 30.13 | + | ||||
| Bedsheet | – | ND | – | ND | + | 31.54 | 31.99 | + | ||||
| Pillows | – | ND | – | ND | ND | ND | ||||||
| Faucet handle | – | ND | – | ND | ND | ND | ||||||
| Door knob | – | ND | – | ND | – | ND | ||||||
| Call button | – | ND | – | ND | – | ND | ||||||
| Restraint | – | ND | – | ND | + | 34.08 | 35.18 | – | ||||
| Blood pressure cuff | – | ND | – | ND | – | ND | ||||||
| Ambu mask/NIV mask | – | ND | – | ND | + | 28.85 | 28.94 | + | ||||
| Ventilator | – | ND | – | ND | – | ND | ||||||
| Patient monitor | – | ND | – | ND | – | ND | ||||||
| Bedside table | ND | ND | ND | ND | U | 33.09 | U | + | ||||
| High-flow oxygen generator | ND | ND | ND | ND | + | 30.56 | 33.12 | – | ||||
| Telephone | ND | ND | ND | ND | + | 31.39 | 33.42 | – | ||||
| Remote controller | ND | ND | ND | ND | + | 29.48 | 29.66 | + | ||||
| Thermometer | ND | ND | ND | ND | + | 31.56 | 32.13 | – | ||||
| Cup | ND | ND | ND | ND | + | 32.32 | 33.55 | – | ||||
rRT–PCR, reverse transcription polymerase chain reaction; SARS-CoV-2, severe acute respiratory syndrome coronavirus 2; PCR, polymerase chain reaction; CT, cycle threshold; RdRp, RNA-dependent RNA polymerase; ND, not done; U; undetermined; NIV, non-invasive ventilator; –, negative; +, positive.
a
The floor within 1 m from the patient.
b
The floor at a distance of >2 m from the patient.