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COVID-19 appeared in December 2019, needing efforts of science. Besides, a range of light therapies (photodynamic therapy, ultraviolet [UV], laser) has shown scientific alternatives to conventional decontamination therapies. Investigating the efficacy of light-based therapies for environment decontamination against SARS-CoV2, a PRISMA systematic review of Phototherapies against SARS-CoV or MERS-CoV species discussing changes in viral RT-PCR was done. After searching MEDLINE/PubMed, EMBASE, and Literatura Latino-Americana e do Caribe em Ciências da Saúde we have found studies about cell cultures irradiation (18), blood components irradiation (10), N95 masks decontamination (03), inanimate surface decontamination (03), aerosols decontamination (03), hospital rooms irradiation (01) with PDT, LED, and UV therapy. The best quality results showed an effective low time and dose UV irradiation for environments and inanimate surfaces without human persons as long as the devices have safety elements dependent on the surfaces, viral charge, humidity, radiant exposure. To interpersonal contamination in humans, PDT or LED therapy seems very promising and are encouraged.
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http://www.ncbi.nlm.nih.gov/pmc/articles/PMC9880673 | PMC |
http://dx.doi.org/10.1002/jbio.202200306 | DOI Listing |
Am J Infect Control
September 2025
Department of Food Science, 745 Agricultural Mall Drive, Purdue University, West Lafayette, IN USA 47907. Electronic address:
Background: Manual wiping of surfaces, a primary method in preventing hospital acquired infections, can vary significantly in its ability to eliminate bacteria and prevent cross-contamination.
Methods: Four liquid-based cleaning and disinfecting formulations comprised of hydrogen peroxide (HP), ethoxylated alcohol (EA), quaternary ammonium compounds (Quat and Quat2), or a water-based control were evaluated for their bactericidal efficacy in combination with three different wiping materials: microfiber, polypropylene, and cotton. Each chemistry and wipe combination were evaluated for its ability to reduce microbial contamination on a hard, non-porous surface measuring one meter.
Water Res
August 2025
State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin 150090, China.
Catalysts for heterogeneous advanced oxidation processes (AOPs) in water remediation face environmental sustainability challenges, due to the intensive production of catalysts and limited stability of catalysts while maintaining high efficiency. Herein, we design a biomimetic carbon catalyst (BCC) inspired by the diatom frustule valve structure, achieving high environmental sustainability while maintaining superior water decontamination performance by a non-radical direct electron transfer (DET) pathway through activating peracetic acid (PAA). Utilizing a hydrogen-bonding strategy, BCC features pillared layered hierarchical pores with an ultrahigh specific surface area of 2710.
View Article and Find Full Text PDFWater Res
September 2025
State Key Laboratory of Soil Pollution Control and Safety, Department of Environmental Science, Zhejiang University, Hangzhou 310058, China; Future Environment Laboratory, Innovation Center of Yangtze River Delta, Zhejiang University, Jiaxing 314100, China. Electronic address:
Accelerating the rate-limiting surface Fe(III)/Fe(II) redox cycling is pivotal for efficient iron-mediated Fenton-like decontamination, yet conventional reductants (e.g., toxic hydroxylamine, thiosulfate) suffer from secondary toxicity, self-quenching, and heavy metal leaching.
View Article and Find Full Text PDFInfect Control Hosp Epidemiol
September 2025
Department of Infectious Diseases, Infection Control and Employee Health, The University of Texas MD Anderson Cancer Center, Houston, TX, USA.
Background And Objectives: Enhanced environmental disinfection is linked to reduced hospital-acquired infection rates. In this study, we aimed to evaluate the efficacy of an emerging disinfection technology, a filtered far-UV-C handheld (FFUHH) device, for reducing bacterial loads on high-touch surfaces in shared clinical workrooms, and to isolate, identify and characterize clinically significant environmental pathogens.
Methods: We compared samples from high-touch items (dictation device, mouse, armchair, desk, and keyboard) before and after FFUHH treatment.
Ann Work Expo Health
September 2025
Division of Environmental Health Sciences, School of Public Health, University of Minnesota Twin Cities, Minneapolis, MN 55455, United States.
Antineoplastic drugs can persist on surfaces in human and veterinary oncology clinics where they are administered, resulting in potentially hazardous exposures for healthcare workers and cancer patient caregivers. To assess potential surface contamination in occupational settings, a new liquid chromatography-selected reaction monitoring-mass spectrometry (LC-SRM-MS/MS) method was developed to simultaneously detect six commonly used antineoplastic drugs. A surface wipe and desorption method was optimized for cyclophosphamide, doxorubicin, methotrexate, etoposide, paclitaxel, and 5-fluorouracil with drug desorption recoveries ranging from 49% to 79%.
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