Methodology for Risk Assessment of SARS-CoV-2 Virus Transmission in Hospital Buildings DOI Creative Commons

Thaysa V. da Cunha,

Laryssa F. C. Willcox,

Bruno B. F. da Costa

et al.

Safety, Journal Year: 2023, Volume and Issue: 9(4), P. 78 - 78

Published: Nov. 4, 2023

Considering the impact of COVID-19 on hospital facilities and relevance risk management occupational health safety within this context, study introduces a method to assess SARS-CoV-2 virus transmission in toilet. The proposed is based tripod involving environmental, human, factors. For this, assessment methodologies were applied, such as Failure Modes Effects Analysis (FMEA), Ergonomic Work (EWA), which allowed identification indicators, Fault Tree (FTA), routes toilets. Subsequently, Analytic Hierarchy Process (AHP) was used find each route weighting for calculating Risk Score. results indicated that design sanitary equipment, with an emphasis washbasins toilets, especially or large circulation establishments, paramount importance dissemination pathogens. Safe habits use protective gear must be continuously encouraged, but greater attention paid technical engineering issues. Furthermore, developed proved applicable tool identify main sources prioritize implementation control measures.

Language: Английский

The association of COVID-19 incidence with temperature, humidity, and UV radiation – A global multi-city analysis DOI Creative Commons

Luise N. Nottmeyer,

Ben Armstrong, Rachel Lowe

et al.

The Science of The Total Environment, Journal Year: 2022, Volume and Issue: 854, P. 158636 - 158636

Published: Sept. 7, 2022

Language: Английский

Citations

53
Photoaging of Typical Microplastics as Affected by Air Humidity: Mechanistic Insights into the Important Role of Water Molecules DOI
Chao Wang, Sijia Liang,

Lihua Bai

et al.

Environmental Science & Technology, Journal Year: 2023, Volume and Issue: 57(14), P. 5967 - 5977

Published: March 29, 2023

Recent studies showed that land is the most important sink for microplastics (MPs); however, limited information available on photoaging processes of surface MPs are exposed to air. Herein, this study developed two in situ spectroscopic methods systematically explore effect air humidity MP using a microscope Fourier transform infrared spectroscopy and laser Raman microscope, which were equipped with control system. Polyethylene microplastics, polystyrene poly(vinyl chloride) (PVC-MPs) used as model MPs. Our results relative (RH) could significantly influence oxygen-containing moieties generated from photo-oxidation, especially PVC-MPs. As RH level varied 10 90%, decrease photogenerated carbonyl group an increase hydroxyl observed. This be attributed involvement water molecules production groups, subsequently inhibited generation. Moreover, adsorption coexisting contaminants (i.e., tetracycline) photoaged exhibited strong dependence, assigned hydrogen bonding between tetracycline carbonyls aged hydroxyls. reveals ubiquitous but previously overlooked aging route, may account changed physiochemical properties under solar irradiation.

Language: Английский

Citations

31
An overview of SARS-CoV-2 transmission and engineering strategies to mitigate risk DOI Open Access
Bey Fen Leo, Chin Yik Lin, Kalaimani Markandan

et al.

Journal of Building Engineering, Journal Year: 2023, Volume and Issue: 73, P. 106737 - 106737

Published: May 8, 2023

Language: Английский

Citations

21
Association of air pollution and weather conditions during infection course with COVID-19 case fatality rate in the United Kingdom DOI Creative Commons
M. Pear Hossain, Wen Zhou, Marco Y. T. Leung

et al.

Scientific Reports, Journal Year: 2024, Volume and Issue: 14(1)

Published: Jan. 6, 2024

Abstract Although the relationship between environmental factors, such as weather conditions and air pollution, COVID-19 case fatality rate (CFR) has been found, impacts of these factors to which infected cases are exposed at different infectious stages (e.g., virus exposure time, incubation period, or after symptom onset) still unknown. Understanding this link can help reduce mortality rates. During first wave in United Kingdom (UK), CFR varied widely among four countries UK, allowing differential be assessed. We developed a generalized linear mixed-effect model combined with distributed lag nonlinear models estimate odds ratio (i.e., temperature, sunlight, relative humidity, rainfall) pollution ozone, $$N{O}_{2}$$ N O 2 , $$S{O}_{2}$$ S $$CO$$ CO $$P{M}_{10}$$ P M 10 $$P{M}_{2.5}$$ 2.5 ) using data March 26, 2020 September 15, UK. After retrospectively time adjusted was estimated back-projection technique, stepwise selection method used choose best based on Akaike information criteria closeness predicted observed values CFR. The risk death reached its maximum level when low temperature (6 °C) occurred 1 day before (OR 1.59; 95% CI 1.52–1.63), prolonged sunlight duration (11–14 h) 3 days 1.24; 1.18–1.30) increased (19 μg/m onset 1.12; 1.09–1.16). reopening, many will identified their symptoms appear. findings highlight importance designing preventive measures against severe illness considering onset.

Language: Английский

Citations

6
Heated quartz crystal microbalance with highly controlled integration of ZIF-67 for ultra-reliable humidity sensing DOI
Il Ryu Jang, Sugato Hajra, Rojalin Sahu

et al.

Sensors and Actuators B Chemical, Journal Year: 2023, Volume and Issue: 396, P. 134589 - 134589

Published: Sept. 9, 2023

Language: Английский

Citations

13
Temperature-dependent Spike-ACE2 interaction of Omicron subvariants is associated with viral transmission DOI Creative Commons
Mehdi Benlarbi,

Shilei Ding,

Étienne Bélanger

et al.

mBio, Journal Year: 2024, Volume and Issue: 15(8)

Published: July 2, 2024

The continued evolution of severe acute respiratory syndrome 2 (SARS-CoV-2) requires persistent monitoring its subvariants. Omicron subvariants are responsible for the vast majority SARS-CoV-2 infections worldwide, with XBB and BA.2.86 sublineages representing more than 90% circulating strains as January 2024. To better understand parameters involved in viral transmission, we characterized functional properties Spike glycoproteins from BA.2.75, CH.1.1, DV.7.1, BA.4/5, BQ.1.1, XBB, XBB.1, XBB.1.16, XBB.1.5, FD.1.1, EG.5.1, HK.3, JN.1. We tested their capacity to evade plasma-mediated recognition neutralization, binding angiotensin-converting enzyme (ACE2), susceptibility cold inactivation, processing, well impact temperature on Spike-ACE2 interaction. found that compared early wild-type (D614G) strain, most subvariants' evolved escape neutralization by plasma individuals who received a fifth dose bivalent (BA.1 or BA.4/5) mRNA vaccine improve ACE2 binding, particularly at low temperatures. Moreover, had best affinity all temperatures tested. processing is associated inactivation. Intriguingly, was significantly growth rates humans. Overall, report Spikes newly emerged relatively stable resistant present improved which associated, temperatures, rates.IMPORTANCEThe gave rise wide range variants harboring new mutations glycoproteins. Several factors have been transmission fitness such plasma-neutralization whether additional could be importance variants' characterize several glycoprotein presents an further temperature. interaction strongly rate, such, represent another parameter affecting transmission.

Language: Английский

Citations

5
Preparation of fluorescently and biologically active chain-like chitosan nanocomposite and its use in separating MBP-tagged proteins and as fluorescent tracer of tobacco DOI

Mochou Gao,

Zhao Xuehong,

Wei Wang

et al.

Sensors and Actuators B Chemical, Journal Year: 2023, Volume and Issue: 381, P. 133371 - 133371

Published: Jan. 18, 2023

Language: Английский

Citations

11
Design and Implementation of Elevator Push-Buttons with Integrated Ultraviolet-C Light-Emitting Diode Light Sources for Disinfection DOI Creative Commons
Xing Qiu, Jeffery C. C. Lo, Yuanjie Cheng

et al.

Inventions, Journal Year: 2025, Volume and Issue: 10(1), P. 4 - 4

Published: Jan. 15, 2025

Background: More effective and automated techniques for disinfecting elevator push-buttons currently need to be developed, especially given that they are frequently touched by hundreds of individuals. Methods: An automatic push-button disinfection device equipped with four 265 nm ultraviolet-C (UVC) light-emitting diode (LED) packages has been developed after each touch reduce the risk infection. In this paper, UVC leakage test, LED package reliability bacteria efficiency test were performed. Results: The Staphylococcus aureus Escherichia coli can reach over 90% in 10 s, end users set multiple periods light their circumstances. is safe human body if distance exceeds 120 mm. accelerated aging result demonstrates reliable under normal operation end-users increase time compensating irradiance drop. Conclusions: provides a safe, highly efficient, stable solution push-buttons.

Language: Английский

Citations

0
Age, gender, and race differences in nasal morphology: Linking air conditioning and filtration efficiency to disparities in air pollution health outcomes and COVID-19 mortality DOI
Alexander Ishmatov

Chemosphere, Journal Year: 2025, Volume and Issue: 377, P. 144358 - 144358

Published: March 29, 2025

Language: Английский

Citations

0
Decay pattern of SARS-CoV-2 RNA surface contamination in real residences DOI Creative Commons
Nan Lin, Bo Zhang, Rong Shi

et al.

Scientific Reports, Journal Year: 2024, Volume and Issue: 14(1)

Published: March 14, 2024

The COVID-19 pandemic has provided valuable lessons that deserve deep thought to prepare for the future. decay pattern of surface contamination by SARS-CoV-2 RNA in residences patients is important but still unknown. We collected 2,233 samples from 21 categories objects 141 Shanghai when attacked omicron variant spring 2022. Several characteristics and their were investigated identify relevant associations. was explored determine persistence. Approximately 8.7% tested positive RNA. basin, water tap, sewer inlet had highest rates, all exceeding 20%. Only time significantly associated with level SARS-CoV-2, showing a negative association. decrease fit first-order model rate 0.77 ± 0.07 day-1, suggesting 90% reduction three days. Positive associations between cumulative number newly diagnosed same building public corridor significant during Our results, conjunction likely lower infectivity or viability, demonstrate fomite transmission played limited role spread. determined contamination, which reduced This study first show patterns real residential environments, providing insight into transmission, as well community-based prevention control similar threats.

Language: Английский

Citations

2