Table 2.
Result of Air and Environmental Samples in Community Treatment Facility (CTF)a
| Variable | Day After Opening of the CTF | |||
|---|---|---|---|---|
| Day 7b | Day 14c | Day 21d | Day 28e | |
| Total no. of air samples collected | 6 | 6 | 6 | 6 |
| Total no. of environmental samples collected | 130 | 130 | 130 | 130 |
| Sites or items (number of sampling sites) | ||||
| Air samples | ||||
| Patient A (n=1)f | ND | ND | ND | ND |
| Patient B (n=1)g | ND | ND | ND | ND |
| Patient C (n=1)h | ND | ND | ND | ND |
| Patient registration area (n=1)i | ND | ND | ND | ND |
| Patient recreation area | ||||
| Recreation area A (n=1) | ND | ND | ND | ND |
| Recreation area B (n=1) | ND | ND | ND | ND |
| Environmental samples | ||||
| Patient registration area | ||||
| Table (n=7) | ND | ND | ND | ND |
| Chair (n=7) | ND | ND | ND | ND |
| Patient waiting area for registration | ||||
| Table (n=1) | ND | ND | ND | ND |
| Chair (n=12) | ND | ND | ND | ND |
| Blood taking area | ||||
| Table (n=4) | ND | ND | ND | ND |
| Chair (n=4) | ND | ND | ND | ND |
| Vital sign monitoring areas | ||||
| Table (n=10) | ND | ND | ND | ND |
| Chair (n=10) | ND | ND | ND | ND |
| Blood-pressure machine (n=10) | ND | ND | ND | ND |
| Electronic panel (n=10) | ND | ND | ND | ND |
| Patient recreation areas | ||||
| Table (n=2) | ND | ND | ND | ND |
| Chair (n=12) | ND | ND | ND | ND |
| Radiograph area | ||||
| Radiograph machine (n=1) | ND | ND | ND | ND |
| Chair (n=10) | ND | ND | ND | ND |
| Doffing areas for staff | ||||
| Table (n=6) | ND | ND | ND | ND |
| Mirror (n=6) | ND | ND | ND | ND |
| Partition (n=24)j | ND | ND | ND | ND |
Note. ND, SARS-CoV-2 RNA was not detectable in the air or environmental samples.
The CTF opened on August 1, 2020 (day 215). Hall 1 had 500 beds arranged in open cubicles, and hall 2 had 400 beds on standby mode. Air and environmental samples were collected in hall 1.
In total, 170 patients (94 men and 76 women) were present when the air and environmental samples were collected.
In total, 165 patients (85 men and 80 women) were present when the air and environmental samples were collected.
In total, 103 patients (59 men and 44 women) were present when the air and environmental samples were collected.
In total, 63 patients (34 men and 29 women) were present when the air and environmental samples were collected.
Patient A represented the selected patient with lowest cycle threshold (Ct) value of the deep throat saliva by reverse transcription polymerase chain reaction (RT-PCR) testing on the day of air sampling. The Ct values of patient A in day 7, 14, 21, and 28 were 18.68, 17.61, 23.31, and 21.83, respectively.
Patient B represented the selected patient with second lowest Ct value of the deep throat saliva by RT-PCR assay on the day of air sampling. The Ct values for patient B on day 7, 14, 21, and 28 were 23.65, 20.31, 23.48, and 28.54, respectively.
Patient C represented the selected patient with third lowest Ct value of the deep throat saliva by RT-PCR assay on the day of air sampling. The Ct values for patient C on days 7, 14, 21, and 28 were 23.79, 23.55, 25.98, and 28.88, respectively.
The area where the healthcare workers closely interacted with patients.
Four partitions were used to build a single unit for removal of personal protective equipment. There were 6 units in the doffing areas, resulting in 24 partitions.