Measurement of SARS-CoV-2 in air and on surfaces in Scottish hospitals

Loh, Miranda; Yaxley, Nicola; Moore, Ginny; Holmes, David; Todd, Susanne; Smith, Alice; Macdonald, Ewan; Semple, Sean; Cherrie, Mark; Patel, Manish R.; Hamill, Raymond; Leckie, Alastair; Dancer, Stephanie J.; Cherrie, John W.

doi:10.1016/j.jhin.2022.11.019

Cited by 4 publications

(1 citation statement)

References 11 publications

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“…According to current evidence, SARS-CoV-2 has a high infector-to-environment contamination rate through close contact with infected individuals, especially when the viral shedding of SARS-CoV-2 occurs during breathing, talking, coughing, or sneezing from symptomatic, asymptomatic, and presymptomatic persons [5]. Many surveys have investigated the presence of SARS-CoV-2 RNA contamination in a wide range of facilities, settings, and wastewater [6][7][8].…”

Section: Introductionmentioning

confidence: 99%

Monitoring Prevalence and Persistence of Environmental Contamination by SARS-CoV-2 RNA in a Makeshift Hospital for Asymptomatic and Very Mild COVID-19 Patients

Yang,

Sun,

Xia

et al. 2023

Int J Public Health

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Objective: To investigate the details of environmental contamination status by SARS-CoV-2 in a makeshift COVID-19 hospital.Methods: Environmental samples were collected from a makeshift hospital. The extent of contamination was assessed by quantitative reverse transcription polymerase chain reaction (RT-qPCR) for SARS-CoV-2 RNA from various samples.Results: There was a wide range of total collected samples contaminated with SARS-CoV-2 RNA, ranging from 8.47% to 100%. Results revealed that 70.00% of sewage from the bathroom and 48.19% of air samples were positive. The highest rate of contamination was found from the no-touch surfaces (73.07%) and the lowest from frequently touched surfaces (33.40%). The most contaminated objects were the top surfaces of patient cubic partitions (100%). The median Ct values among strongly positive samples were 33.38 (IQR, 31.69–35.07) and 33.24 (IQR, 31.33–34.34) for ORF1ab and N genes, respectively. SARS-CoV-2 relic RNA can be detected on indoor surfaces for up to 20 days.Conclusion: The findings show a higher prevalence and persistence in detecting the presence of SARS-CoV-2 in the makeshift COVID-19 hospital setting. The contamination mode of droplet deposition may be more common than contaminated touches.

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