33,374 results match your criteria disinfection

Decontamination of respirators amid shortages due to SARS-CoV-2.

Photochem Photobiol Sci 2021 Jun 12. Epub 2021 Jun 12.

Department of Environmental Health Sciences, University of Alabama at Birmingham, Birmingham, AL, 35294-0022, USA.

The pandemic created by SARS-CoV-2 has caused a shortage in the supplies of N95 filtering facepiece respirators (FFRs), disposable respirators with at least 95% efficiency to remove non-oily airborne particles, due to increasing cases all over the world. The current article reviewed various possible decontamination methods for FFR reuse including ultraviolet germicidal irradiation (UVGI), hydrogen peroxide vapor (HPV), microwave-generated steam (MGS), hydrogen peroxide gas plasma (HPGP), and 70% or higher ethanol solution. HPV decontamination was effective against bacterial spores (6 log reduction of Geobacillus stearothermophilus spores) on FFRs and viruses (> 4 log reduction of various types of viruses) on inanimate surfaces, and no degradation of respirator materials and fit has been reported. Read More

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Deactivation of Caenorhabditis elegans nematodes in drinking water by PMS/UV-C: efficiency and mechanisms.

Environ Sci Pollut Res Int 2021 Jun 12. Epub 2021 Jun 12.

State Key Laboratory of Pollution Control and Resource Reuse, College of Environmental Science and Engineering, Tongji University, Shanghai, 200092, China.

The occurrence and infestations of chlorine-resistant invertebrates in drinking water distributions have attracted concerns on water quality in China, making effective deactivation imperative. This study presents a novel strategy for nematode (Caenorhabditis elegans) deactivation using peroxymonosulfate (PMS)/UV-C. The results indicated that 100% deactivation efficiency was obtained under optimal conditions. Read More

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Temporary vaccination clinic for COVID-19 in Zhuhai, China.

Hum Vaccin Immunother 2021 Jun 11:1-3. Epub 2021 Jun 11.

Deputy Secretary of Party Committee & Vice President, Zhuhai People's Hospital (Zhuhai Hospital Affiliated with Jinan University), Zhuhai, China.

Vaccines are urgently needed to control the COVID-19 pandemic. To gradually increase the vaccination rate among residents, temporary vaccination clinic for COVID-19 plays an important role. It should be located in an area with convenient transportation and concentrated population. Read More

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Safety evaluation of atmospheric pressure plasma jets in and experiments.

J Periodontal Implant Sci 2021 Jun;51(3):213-223

Department of Periodontology and Dental Research Institute, School of Dentistry, Seoul National University, Seoul, Korea.

Purpose: The atmospheric pressure plasma jet (APPJ) has been introduced as an effective disinfection method for titanium surfaces due to their massive radical generation at low temperatures. Helium (He) has been widely applied as a discharge gas in APPJ due to its bactericidal effects and was proven to be effective in our previous study. This study aimed to evaluate the safety and effects of He-APPJ application at both the cell and tissue levels. Read More

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Preclinical evaluation of passive disinfection caps with a long-term catheter for the prevention of catheter-related bloodstream infection in pediatric cancer patients.

GMS Hyg Infect Control 2021 31;16:Doc20. Epub 2021 May 31.

Medical Solutions Division Laboratory, Europe, Middle East and Africa, 3M Deutschland GmbH, Neuss, Germany.

The use of passive disinfection devices (disinfection caps) may be a beneficial part of a maintenance care bundle, aiming at the prevention of catheter-related bloodstream infections in pediatric cancer patients. This preclinical investigation tested the visual and mechanical integrity of a Broviac™ catheter hub after simulation testing with 122 3M™ CurosTM Stopper Disinfection Caps for Open Female Luers repeatedly attached and removed over 6 months. We found that these catheter hubs were compatible, fully operational, and airtight with use of 3M Curos stopper caps after 6 months of use with 122 caps per catheter hub. Read More

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Assessing the impact of multiple ultraviolet disinfection cycles on N95 filtering facepiece respirator integrity.

Sci Rep 2021 Jun 10;11(1):12279. Epub 2021 Jun 10.

Department of Civil and Resource Engineering, Centre for Water Resources and Studies, Dalhousie University, 1360 Barrington St., Halifax, NS, B3H 4R2, Canada.

During the COVID-19 pandemic, N95 filtering facepiece respirators (FFRs) were recommended to protect healthcare workers when providing care to infected patients. Despite their single-use disposable nature, the need to disinfect and repurpose FFRs is paramount during this global emergency. The objectives of this study were to (1) determine if UV treatment has an observable impact on respirator integrity; (2) test the impact of UV treatment on N95 FFR user fit; and (3) test the impact of UV treatment on FFR integrity. Read More

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Technologies for disinfection of food grains: Advances and way forward.

Food Res Int 2021 Jul 11;145:110396. Epub 2021 May 11.

Centre for Energy and Environmental Sustainability, Lucknow 226 029, Uttar Pradesh, India; Center for Innovation and Translational Research, CSIR-Indian Institute of Toxicology Research, Lucknow 226 001, India; Faculty of Applied Sciences, Durban University of Technology, Durban 4000 South Africa. Electronic address:

Growing demand from the consumers for minimally processed and high-quality food products has raised the scientific quest for foods with improved natural flavours in conjunction with a restricted supplement of additives. In this context, achieving quality and safe food grains and the identification of suitable processing and disinfection technologies have also become the key issues. Microbial contamination is one of the major reasons responsible for the spoilage of food grains. Read More

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Bacteriological safety of sprouts: A brief review.

Int J Food Microbiol 2021 Jun 1;352:109266. Epub 2021 Jun 1.

School of Applied Sciences, State University of Campinas (FCA/UNICAMP), Limeira, SP, Brazil.

The germination process causes changes in the chemical composition of seeds that improves the nutritional value of sprouts, while decreasing their microbiological safety, since the germination conditions are ideal for bacterial growth as well. This review explores the bacteriological safety of sprouts and their involvement in foodborne illness outbreaks, worldwide. Additionally, approaches to improve the shelf-life and microbiological safety of sprouts are discussed. Read More

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Surface plasma with an inkjet-printed patterned electrode for low-temperature applications.

Sci Rep 2021 Jun 9;11(1):12206. Epub 2021 Jun 9.

Department of Physics, Korea Advanced Institute of Science and Technology (KAIST), 291 Daehak-ro, Yuseong-gu, Daejeon, 34141, Republic of Korea.

The global health crisis caused by the recent pandemic has led to increasing social demand for 'new normal' sanitizing and disinfecting facilities to fit our 'new normal' lives. Here, we introduce an inkjet-printed, thin-film plasma source applicable to dry disinfection processes. In contrast to conventional plasma reactors, the merits of plasma produced on a film include disposability, cost-effectiveness, and applicability to high-dimensional objects such as the human body. Read More

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The accuracy of gypsum casts obtained from the disinfected extended-pour alginate impressions through prolonged storage times.

BMC Oral Health 2021 Jun 9;21(1):296. Epub 2021 Jun 9.

Department of Periodontics and Community Dental Sciences, College of Dentistry, King Khalid University, Abha, Saudi Arabia.

Background: Manufacturers of the extended-pour alginates claimed their dimensional stability through prolonged storage. No data confirmed the ability of these materials to maintain their dimensions and the reproduced oral details following their chemical disinfection. Therefore, this study evaluated the dimensional stability and surface detail reproduction of gypsum casts obtained from disinfected extended-pour alginate impressions through different storage time intervals. Read More

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How Chinese Herbal Medicine Prevents Epidemics: From Ancient Pestilences to COVID-19 Pandemic.

Am J Chin Med 2021 Jun 5:1-28. Epub 2021 Jun 5.

College of Public Health, Zhejiang Chinese Medical University, Hangzhou 310053, Zhejiang, P. R. China.

The ongoing coronavirus disease 2019 (COVID-19) pandemic calls for effective control and prevention. Chinese medicine (CM) has developed systematic theories and approaches for infectious disease prevention over 2000 years. Here, we review and analyze Chinese herbal medicines (CHM) used in infectious disease prevention from ancient pestilences to modern epidemics and pandemics to share cumulative preventive medical experience. Read More

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Clinical Laboratory Biosafety Gaps: Lessons Learned from Past Outbreaks Reveal a Path to a Safer Future.

Clin Microbiol Rev 2021 Jun 9:e0012618. Epub 2021 Jun 9.

Department of Laboratory Medicine, Yale University School of Medicine, New Haven, Connecticut, USA.

Patient care and public health require timely, reliable laboratory testing. However, clinical laboratory professionals rarely know whether patient specimens contain infectious agents, making ensuring biosafety while performing testing procedures challenging. The importance of biosafety in clinical laboratories was highlighted during the 2014 Ebola outbreak, where concerns about biosafety resulted in delayed diagnoses and contributed to patient deaths. Read More

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Evaluation of a Domestic Steam Disinfector-Dryer Device for Disinfection of Health Care Workers' Identification Lanyards.

Workplace Health Saf 2021 Jun 9:21650799211012653. Epub 2021 Jun 9.

Nightingale (Belfast City) Hospital.

Background: Fabric lanyards are commonly worn by health care workers (HCWs) and are known to harbor infectious organisms and contribute to the transmission of infection to HCWs and patients. A diverse range of nosocomial pathogens have been found on lanyards, but there are very few studies describing how to successfully disinfect lanyards to break the chain of transmission. Recently, a steam disinfector-dryer device has come on the market, which performs rapid disinfection against nosocomial pathogens and also dries the contents of the device. Read More

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Parallel factor analysis of fluorescence excitation emissions to identify seasonal and watershed differences in trihalomethane precursors.

Chemosphere 2021 Jun 1;282:131061. Epub 2021 Jun 1.

Department of Environmental Engineering, Faculty of Engineering, Kasetsart University, Lad Yao, Chatuchak, Bangkok, 10903, Thailand.

Concentration and chemical composition of dissolved organic matter (DOM) play a major role in formation and speciation of disinfection by-products, such as trihalomethanes (THMs), in water treatment plants (WTPs) during disinfection. This study characterized DOM across the process trains of WTPs using fluorescence excitation emission matrices (EEMs) together with parallel factor analysis (PARAFAC). The PARAFAC model was developed from 216 EEMs of bimonthly water samples from three WTPs in Khon Kaen, Thailand, from May 2018 to Mar 2019. Read More

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Visible-light-driven photocatalytic inactivation of S. aureus in aqueous environment by hydrophilic zinc oxide (ZnO) nanoparticles based on the interfacial electron transfer in S. aureus/ZnO composites.

J Hazard Mater 2021 May 7;418:126013. Epub 2021 May 7.

Henan Key Laboratory of Ion-beam Bioengineering, College of Agricultural Science, Zhengzhou University, Zhengzhou 450052, China. Electronic address:

Waterborne diseases caused by pathogenic microorganisms pose severe threats to human health. ZnO nanoparticles (NPs) hold great potentials as an effective, economical and eco-friendly method for water disinfection, but the exact antimicrobial mechanism of ZnO NPs under visible-light illumination is still not clear. Herein, we investigate the visible-light-driven photocatalytic inactivation mechanism of amino-functionalized hydrophilic ZnO (AH-ZnO) NPs against Staphylococcus aureus (S. Read More

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Insights into unexpected photoisomerization from photooxidation of tribromoacetic acid in aqueous environment using ultrafast spectroscopy.

J Hazard Mater 2021 May 25;418:126214. Epub 2021 May 25.

Department of Civil & Environmental Engineering, The Hong Kong Polytechnic University, Hong Kong. Electronic address:

Haloacetic acids are carcinogenic disinfection by-products (DPBs) and their photo-decomposition pathways, especially for those containing bromine and iodine, are not fully understood. In this study, femtosecond transient absorption (fs-TA) spectroscopy experiments were introduced for the first time to investigate the photochemistry of tribromoacetic acid. The fs-TA experiments showed that a photoisomerization intermediate species HOOCCBr-Br (iso-TBAA) was formed within several picoseconds after the excitation of TBAA. Read More

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Characteristics of hand-to-environment contact during indoor activities in daily life among Korean adults using a video-based observation method.

Osong Public Health Res Perspect 2021 Jun 8. Epub 2021 Jun 8.

College of Nursing, Research Institute of Nursing Science, Jeonbuk National University, Jeonju, Korea.

Objectives: The aim of this study was to describe the characteristics of hand-to-environmental contact (HEC) and to identify the factors influencing HEC behavior in Korean adults' indoor daily life.

Methods: Thirty participants were enrolled from January 14 to February 12, 2018 after providing informed consent for being videotaped. Data were collected by recording their indoor daily lives for 2 hours, resulting in 4,732 HEC cases. Read More

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First report of Phaeoacremonium amygdalinum associated with almond dieback and wood disease in Italy.

Plant Dis 2021 Jun 8. Epub 2021 Jun 8.

University of Foggia, 18972, Department of Agriculture, Food, Natural resources and Engineering, Foggia, Puglia, Italy;

In the last 10 years, almond (Prunus dulcis (Mill.) Webb) cultivation areas in the region of Apulia (southern Italy) have increased. A recent survey in young almond orchards recorded characteristic disease symptoms including rapid collapse of branches, chlorosis of leaves (with sudden wilting and death) in June/July, and bud and shoot dieback in December-March. Read More

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Physical and biological performance evaluation of disinfection systems for transportation vehicles against AI virus.

J Microbiol Biotechnol 2021 Jun 1. Epub 2021 Jun 1.

College of Veterinary Medicine, Konkuk University, Seoul 05029, Republic of Korea.

In order to prevent the outbreak of infectious diseases that cause huge losses economically and socially, domestic livestock farms and related facilities have introduced automatic and semiautomatic disinfectant solution spraying system for vehicle. However, the facilities standards and specifications are different for each manufacturer, and there is no scientific performance evaluation. The puropose of this study is to develop physical and biological evaluation methods. Read More

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Semiconducting graphitic carbon nitride integrated membranes for sustainable production of clean water: A review.

Chemosphere 2021 May 26;282:130898. Epub 2021 May 26.

Department of Chemical Engineering, King Fahd University of Petroleum and Minerals, Dhahran, 31261, Saudi Arabia.

Semiconducting membranes integrated with nanomaterials have placed themselves in new emerging researches tremendously for seawater desalination, oil-water separation, disinfection, removal of inorganic as well as organic pollutants. Howbeit, only nanoparticles unified membranes show quite a lot lags in their performance, although some of these particles associated with the demerits of high cost. In contrast, graphitic carbon nitride incorporated membranes offered improved aforementioned properties corresponding to absolute essential qualities such as cost-effective, environmentally friendly, easy-to-operate, green manufacturing, anti-fouling, and low energy consumption. Read More

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Using surrogate data to assess risks associated with microbial peak events in source water at drinking water treatment plants.

Water Res 2021 May 25;200:117296. Epub 2021 May 25.

Canada Research Chair in Source Water Protection, Department of Civil, Geological, and Mining Engineering, Polytechnique Montreal, Montreal, Quebec, H3C 3A7, Canada.

A monitoring strategy was implemented at two drinking water treatment plants in Quebec, Canada, to evaluate microbial reduction performances of full-scale treatment processes under different source water conditions. β-D-glucuronidase activity in source water was automatically monitored in near-real-time to establish baseline and event conditions at each location. High-volume water samples (50-1,500 L) were collected at the inflow and the outflow of coagulation/flocculation, filtration, and UV disinfection processes and were analysed for two naturally occurring surrogate organisms: Escherichia coli and Clostridium perfringens. Read More

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A review of cleaning and disinfection guidelines and recommendations following an outbreak of classical scrapie.

Prev Vet Med 2021 May 27;193:105388. Epub 2021 May 27.

Food Standards Agency, Clive House, 70 Petty France, London, SW1H 9EX, UK.

Classical scrapie is a prion disease of small ruminants, the infectious agent of which has been shown to be extremely persistent in the environment. Cleaning and disinfection (C&D) after a scrapie outbreak is currently recommended by many governments' veterinary advisors and implemented in most farms affected. Yet, the effectiveness of these procedures remains unclear. Read More

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Inactivation of African Swine Fever Virus by reagents commonly used in containment laboratories.

J Virol Methods 2021 Jun 4:114203. Epub 2021 Jun 4.

Virology Department, Animal Health and Plant Health Agency (APHA), Addlestone, KT15 3NB, United Kingdom. Electronic address:

Rapid and effective virus inactivation is an essential step for safe diagnostic testing and for research and vaccine development using infectious viruses. We characterised the reduction of African Swine Fever Virus (ASFV) infectivity using Virkon™ S (Lanxess) 1% w/v disinfectant, FACS™ lysing buffer (BD), and AVL™ buffer (Qiagen), using porcine cell culture. No virus was detected following a 30 second 20:1 v/v mixing ratio of Virkon™ S 1% with high titre ASFV, supporting its effective use as a laboratory surface disinfectant. Read More

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Modeling the outbreak and control of African swine fever virus in large-scale pig farms.

J Theor Biol 2021 Jun 4:110798. Epub 2021 Jun 4.

LAMPS, Department of Mathematics and Statistics, York University, Toronto, Ontario M3J1P3, Canada. Electronic address:

African swine fever virus (ASFV) leads to a highly contagious, lethal and economically devastating disease among pigs. Since no effective treatment for the disease, it is crucial to investigate its transmission mechanism and control strategies in large-scale pig farms. We first established a toy model to explore ASFV spread in one pig unit. Read More

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[Application of Internet of Things Technology in Isolation Ward].

Zhongguo Yi Liao Qi Xie Za Zhi 2021 Jun;45(3):266-270

Information Department of the First Affiliated Hospital of Air Force Military Medical University, Xi'an, 710032.

Based on the existing information construction foundation of the isolation ward of the hospital, according to the relevant guidelines issued by the National Health Commission, the management of environmental isolation, disinfection, medical staff management and patient management are discussed, combining the application of Internet of things technology in hospital management, a series of new applications with distinctive features of Internet of Things (IoT) are built, and advanced technology and equipment such as Internet of Things are introduced. Realize the application scenario, implementation method and business mode of intelligent IoT in isolation ward, form an integrated data management center and monitoring system through data intelligent IoT, aggregation and operation, and realize the digital collection, processing, storage, transmission and analysis of medical information, equipment information, personnel information and management information, so as to realize medical closed-loop management, reduce the hidden danger of medical safety in isolated wards and improve the level of medical quality. Read More

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Effectiveness of Video-Based Online Training for Health Care Workers to Prevent COVID-19 Infection: An Experience at a Tertiary Care Level Institute, Uttarakhand, India.

Cureus 2021 May 1;13(5):e14785. Epub 2021 May 1.

Pathology, All India Institute of Medical Sciences, Rishikesh, IND.

Purpose Amidst the current COVID-19 pandemic, traditional teaching methodology took a back foot. However, an urgent need for training health care worker (HCW) on preventive measures for COVID-19 infection was the need of the hour. Keeping in mind the precautionary measures required to combat COVID-19 infection, the only promising option for training was by adopting an online learning method. Read More

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Infection prevention measures for patients undergoing hemodialysis during the COVID-19 pandemic in Japan: a nationwide questionnaire survey.

Ren Replace Ther 2021 29;7(1):27. Epub 2021 May 29.

Division of Nephrology and Endocrinology, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo, 113-8655 Japan.

Background: Coronavirus disease 2019 (COVID-19), caused by severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), has become a global pandemic affecting a variety of medical treatments, including hemodialysis. This study aims to investigate the implementation of infection control measures, to examine the shortage of personal protective equipment (PPE) and disinfectants, and to quantify the number of nosocomial COVID-19 transmissions in hemodialysis facilities in Japan during the pandemic.

Methods: We conducted a nationwide questionnaire survey between 20 October and 16 November 2020 (i. Read More

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Disinfection protocol for human musculoskeletal allografts in tissue banking using hydrogen peroxide 30.

Cell Tissue Bank 2021 Jun 6. Epub 2021 Jun 6.

Laboratory of Emerging Infectious Diseases, Escola de Medicina, Pontifícia Universidade Católica Do Paraná, Rua imaculada Conceição 1155, Curitiba, Paraná, 80215-901, Brazil.

Musculoskeletal allografts are used in reconstructive procedures, however, the risk of contamination with potential pathogens is possible, and safe transplantation requires multiple processing considerations. Hydrogen peroxide (HO) has commonly been used in bone washing because it can remove donor cells and eliminate antigens, pathogens, or cytotoxic agents from the matrix. The aim of this study was to evaluate the quantitative activity of HO in a model of bone contamination with a high bacterial load to define the bioburden reduction. Read More

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Linearized esculentin-2EM shows pH dependent antibacterial activity with an alkaline optimum.

Mol Cell Biochem 2021 Jun 6. Epub 2021 Jun 6.

School of Pharmacy and Biological Sciences, University of Central Lancashire, Preston, PR1 2HE, UK.

Here the hypothesis that linearized esculentin 2EM (E2EM-lin) from Glandirana emeljanovi possesses pH dependent activity is investigated. The peptide showed weak activity against Gram-negative bacteria (MLCs ≥ 75.0 μM) but potent efficacy towards Gram-positive bacteria (MLCs ≤ 6. Read More

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