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Wong, Shuk-Ching; Chan, Veronica Wing-Man; AuYeung, Christine Ho-Yan; Chen, Jonathan Hon-Kwan; Yip, Cyril Chik-Yan; So, Simon Yung-Chun; Li, Xin; Lung, David Christopher; Tsang, Anita Man-Ching; To, Kelvin Kai-Wang; Yuen, Kwok-Yung; Cheng, Vincent Chi-Chung
Infection control and hospital epidemiology, 05/2023, Letnik: 44, Številka: 5Journal Article
Air dispersal of respiratory viruses other than SARS-CoV-2 has not been systematically reported. The incidence and factors associated with air dispersal of respiratory viruses are largely unknown. We performed air sampling by collecting 72,000 L of air over 6 hours for pediatric and adolescent patients infected with parainfluenza virus 3 (PIF3), respiratory syncytial virus (RSV), rhinovirus, and adenovirus. The patients were singly or 2-patient cohort isolated in airborne infection isolation rooms (AIIRs) from December 3, 2021, to January 26, 2022. The viral load in nasopharyngeal aspirates (NPA) and air samples were measured. Factors associated with air dispersal were investigated and analyzed. Of 20 singly isolated patients with median age of 30 months (range, 3 months-15 years), 7 (35%) had air dispersal of the viruses compatible with their NPA results. These included 4 (40%) of 10 PIF3-infected patients, 2 (66%) of 3 RSV-infected patients, and 1 (50%) of 2 adenovirus-infected patients. The mean viral load in their room air sample was 1.58×10 copies/mL. Compared with 13 patients (65%) without air dispersal, these 7 patients had a significantly higher mean viral load in their NPA specimens (6.15×10 copies/mL vs 1.61×10 copies/mL; < .001). Another 14 patients were placed in cohorts as 7 pairs infected with the same virus (PIF3, 2 pairs; RSV, 3 pairs; rhinovirus, 1 pair; and adenovirus, 1 pair) in double-bed AIIRs, all of which had air dispersal. The mean room air viral load in 2-patient cohorts was significantly higher than in rooms of singly isolated patients (1.02×10 copies/mL vs 1.58×10 copies/mL; = .020). Air dispersal of common respiratory viruses may have infection prevention and public health implications.
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JCR | SNIP | JCR | SNIP | JCR | SNIP | JCR | SNIP |
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Vir: Osebne bibliografije
in: SICRIS
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