Table 1.
Epidemiological Characteristics of Patients Who Were Singly Isolated in Airborne Infection Isolation Room With Respiratory Tract Infection Associated With Detectable Viral Genome by Air Sampler
| Patient | Sex/age | Symptoms (Underlying Disease, If Any) | Respiratory Virus | Viral Load in NPA (Date of Collection) | Viral Load in Air (Date of Collection) a |
Treatment |
|---|---|---|---|---|---|---|
| 1 | M/3 y | Fever, cough, SOB (asthma) | PIF | 2.87×107 copy/mL (2 Dec 2021) |
763 copy/mL (6 Dec 2021) b |
Salbutamol puff, prednisolone, paracetamol, chlorphenamine |
| 2 | F/3 y | Fever, cough, RN | PIF | 9.26×106 copy/mL (11 Dec 2021) |
162 copy/mL (13 Dec 2021) b |
Amoxicillin-clavulanate, paracetamol |
| 3 | F/3 mo | Cough | PIF | 9.76×107 copy/mL (20 Dec 2021) |
1,435 copy/mL (22 Dec 2021) b |
Chlorphenamine |
| 4 | M/31 mo | Fever, cough, SOB (cyclical neutropenia, asthma) | PIF | 3.95×107 copy/mL (26 Dec 2021) |
63 copy/mL (28 Dec 2021) b |
Salbutamol puff, prednisolone |
| 5 | M/29 mo | Fever, cough, RN | RSV | 1.64×108 copy/mL (28 Dec 2021) |
619 copy/mL (29 Dec 2021) b |
Paracetamol |
| 6 | F/20 mo | Fever, SOB | RSV | 8.76×107 copy/mL (9 Jan 2022) |
382 copy/mL (17 Jan 2022) b |
Salbutamol puff |
| 7 | M/12 mo | Fever | Adenovirus | 3.92×105 copy/mL (7 Dec 2021) |
7,602 copy/mL (8 Dec 2021) c |
Paracetamol |
Note. NPA, nasopharyngeal aspirates; PIF, parainfluenza virus; RN, running nose; RSV, respiratory syncytial virus; SOB, shortness of breath.
72,000 L of air was collected over a 6-h period for each air sample. All patients did not wear surgical mask during air sample collection. During the viral load assay for air samples, the collection substrate was immersed in 2 mL of viral transport medium. Therefore, the viral load in air is expressed as the copy of viral genome per mL of viral transport medium.
Detectable viral RNA in air.
Detectable viral DNA in air.