Analysis of multiple factors influencing the deposition velocity of fine particles onto the body surfaces of healthcare workers

Building and Environment, Journal Year: 2025, Volume and Issue: 270, P. 112546 - 112546

Published: Jan. 8, 2025

Language: Английский

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Appropriate positioning of a UVC lamp in an aircraft lavatory to inactivate microorganisms on frequently touched surfaces

Building and Environment, Journal Year: 2025, Volume and Issue: unknown, P. 112727 - 112727

Published: Feb. 1, 2025

Language: Английский

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A Case-Control Study of Behavioural and Built Environment Determinants of COVID-19 Transmission in Sheltered Markets

Building and Environment, Journal Year: 2024, Volume and Issue: 264, P. 111909 - 111909

Published: July 31, 2024

In July 2021, amid occasional COVID-19 community transmission, an outbreak in a seafood wholesale centre propagated secondary clusters sheltered markets Singapore. This period offers unique chance to study transmission risk factors related environmental features and personal behaviours markets. Only 40 % of the population was vaccinated during this period. A two-tier case-control conducted. The first tier entailed site assessments where primary cases, presumed have acquired at centre, worked. Markets with cases (case markets) were compared against those without (control markets). second comprised telephone questionnaires administered individuals who worked or visited three highest number respondents either testing positive negative for SARS-CoV-2. Assessment 38 showed that "seeded" more likely experience (adjusted odds ratio, aOR: 2.0; 95 confidence interval, CI: 1.3–4.7). From 333 visitor responses, maintaining social distancing (aOR: 0.34; 0.11–1.06) completing vaccination 0.25; 0.07–0.95) decreased infection risk, while using public washrooms increased 3.12; 0.87–11.00). Among 86 staff statistically significant gender mask type: male 0.14; 0.02–0.62) wearing surgical/N95 masks 0.10; 0.01–0.71) had lower risk. Wider aisles correlated higher 2.5; 1.3–6.7). These findings underscore importance considering both built environment individual devising effective measures mitigate hubs general. observed association wider market could be attributed these facilitating gathering intermingling individuals, underlining distancing. identified among different populations within highlight need population-specific prevention.

Language: Английский

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Emitted droplets and aerosols and their transmission when drying hands under an air-jet dryer

Journal of Hazardous Materials, Journal Year: 2024, Volume and Issue: 482, P. 136508 - 136508

Published: Nov. 14, 2024

Language: Английский

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