Detection of Sars-Cov-2 in the air of two hospitals in Hermosillo, Sonora, México, utilizing a low-cost environmental monitoring system

López, Jorge Hernández; Romo, Álvaro Santos; Molina, Daniel; Hernández, Gerardo Álvarez; Cureño, Ángel Benjamín Gutiérrez; Acosta, Magali Avilés; Gaxiola, Carlos Andrés Avilés; Félix, Marcos José Serrato; Galván, Teresa Gollas

doi:10.1016/j.ijid.2020.10.089

Cited by 17 publications

(19 citation statements)

References 24 publications

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“…The present study stems from the possible displacement and transport of SARS-CoV-2 virus in ultrafine particles suspended in the hospital environment, considering the different dynamics of air movement, circulation, and internal air quality ( Cao et al, 2021 , Hadei et al, 2021 , López et al, 2021 , Shao et al, 2021 ;). It is essential to assess the air quality in hospitals that were built quickly, and to ensure that the risks of contamination are indeed low in these facilities ( Chen et al, 2021 ), or if the novel coronavirus is unimpeded in its ability to move throughout.…”

Section: Introductionmentioning

confidence: 99%

“…Ultrafine particles which contain the SARS-CoV-2 virus are easily suspended in the air and have the propensity to travel great distances due to their aerodynamic diameters ≤ 10 μm (≤ PM10). SARS-CoV-2 has been found on particles even smaller than 1 μm (≤ PM1) ( López et al, 2021 , Robotto et al, 2021 , Shao et al, 2021 ).…”

Section: Introductionmentioning

confidence: 99%

“…SARS-CoV-2 transmission has been shown to occur in environments outside hospital settings through ventilation as well ( Hadei et al, 2021 , López et al, 2021 , Robotto et al, 2021 , Shao et al, 2021 ). For this reason, the evaluation of the internal ventilation system of hospitals with modular architecture can assess and predict possible risks of contamination through air circulation.…”

Section: Introductionmentioning

confidence: 99%

“…For this reason, the evaluation of the internal ventilation system of hospitals with modular architecture can assess and predict possible risks of contamination through air circulation. It is also necessary to consider the consequences from the outlet of this air in areas outside and surrounding the hospital ( Hadei et al, 2021 , López et al, 2021 ).…”

Section: Introductionmentioning

confidence: 99%

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Geo-environmental parametric 3D models of SARS-CoV-2 virus circulation in hospital ventilation systems

Zorzi

Neckel

Maculan

et al. 2022

Geoscience Frontiers

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Geo-environmental parametric 3D models of SARS-CoV-2 virus circulation in hospital ventilation systems

Zorzi

Neckel

Maculan

et al. 2022

Geoscience Frontiers

View full text Add to dashboard Cite

show abstract

“…There are existing reports of surface and environment contamination with SARS-CoV-2 in hospital rooms of COVID-19 positive patients [14-16]. A study by Lednicky et al (2020) has provided evidence for the presence of viable SARS-CoV-2 in the air samples collected from hospital room with COVID-19 patient even in the absence of any aerosol generating procedure [17].…”

Section: Introductionmentioning

confidence: 99%

Detection of SARS-CoV-2 in the air from hospitals and closed rooms occupied by COVID-19 patients

Moharir

Chandra

Goel

et al. 2021

Preprint

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To understand air transmission characteristics of SARS-CoV-2 and risks for health care personnel and visitors to hospitals, we analyzed air samples collected from various enclosures in hospitals at Hyderabad and Mohali and performed closed room experiments with COVID-19 positive individuals. We collected 64 air samples from COVID and non-COVID areas of various hospitals and 17 samples from closed rooms occupied by COVID patients. 4 samples from COVID care areas were positive for SARS-CoV-2 with no obvious predilection towards ICU/non-ICU areas in the hospital samples. In the closed room experiments, where one or more COVID-19 patients spent a short duration of time, one sample - collected immediately after the departure of three symptomatic patients from the room - was positive. Our results indicate that the chance of picking up SARS-CoV-2 in the air is directly related to a number of COVID positive cases in the room, their symptomatic status, and the duration of exposure and that the demarcation of hospital areas into COVID and non-COVID areas is a successful strategy to prevent cross infections. In neutral environmental conditions, the virus does not seem to spread farther away from the patients, especially if they are asymptomatic, giving an objective evidence for the effectiveness of physical distancing in curbing the spread of the epidemic.

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Measuring SARS‐CoV‐2 aerosolization in rooms of hospitalized patients

Yan

Lin

Albaugh

et al. 2022

Laryngoscope Investig Oto

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Objective Airborne spread of the severe acute respiratory syndrome coronavirus 2 (SARS‐CoV‐2) remains a significant risk for healthcare workers. Understanding transmission of SARS‐CoV‐2 in the hospital could help minimize nosocomial infection. The objective of this pilot study was to measure aerosolization of SARS‐CoV‐2 in the hospital rooms of COVID‐19 patients. Methods Two air samplers (Inspirotec) were placed 1 and 4 m away from adults with SARS‐CoV‐2 infection hospitalized at an urban, academic tertiary care center from June to October 2020. Airborne SARS‐CoV‐2 concentration was measured by quantitative reverse transcription polymerase chain reaction and analyzed by clinical parameters and patient demographics. Results Thirteen patients with COVID‐19 (eight females [61.5%], median age: 57 years old, range 25–82) presented with shortness of breath (100%), cough (38.5%) and fever (15.4%). Respiratory therapy during air sampling varied: mechanical ventilation via endotracheal tube (n = 3), high flow nasal cannula (n = 4), nasal cannula (n = 4), respiratory helmet (n = 1), and room air (n = 1). SARS‐CoV‐2 RNA was identified in rooms of three out of three intubated patients compared with one out of 10 of the non‐intubated patients (p = .014). Airborne SARS‐CoV‐2 tended to decrease with distance (1 vs. 4 m) in rooms of intubated patients. Conclusions Hospital rooms of intubated patients had higher levels of aerosolized SARS‐CoV‐2, consistent with increased aerosolization of virus in patients with severe disease or treatment with positive pressure ventilation through an endotracheal tube. While preliminary, these data have safety implications for health care workers and design of protective measures in the hospital. Level of Evidence 2

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Detection of Sars-Cov-2 in the air of two hospitals in Hermosillo, Sonora, México, utilizing a low-cost environmental monitoring system

Cited by 17 publications

References 24 publications

Geo-environmental parametric 3D models of SARS-CoV-2 virus circulation in hospital ventilation systems

Geo-environmental parametric 3D models of SARS-CoV-2 virus circulation in hospital ventilation systems

Detection of SARS-CoV-2 in the air from hospitals and closed rooms occupied by COVID-19 patients

Measuring SARS‐CoV‐2 aerosolization in rooms of hospitalized patients

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