Results 11 to 20 of about 34,402 (308)

Effectiveness of Face Mask or Respirator Use in Indoor Public Settings for Prevention of SARS-CoV-2 Infection — California, February–December 2021

MMWR. Morbidity and mortality weekly report, 2022
The use of face masks or respirators (N95/KN95) is recommended to reduce transmission of SARS-CoV-2, the virus that causes COVID-19 (1). Well-fitting face masks and respirators effectively filter virus-sized particles in laboratory conditions (2,3 ...
K. Andrejko, J. Pry, Jennifer F. Myers, N. Fukui, J. DeGuzman, J. Openshaw, J. Watt, J. Lewnard, Seemalata Jain, Yasmine Abdulrahim, C. M. Barbaduomo, Miriam I Bermejo, Julia Cheunkarndee, Adrian F Cornejo, Savannah Corredor, Najla Dabbagh, Zheng N Dong, A. Dyke, Anna T Fang, D. Felipe, Paulina M Frost, Timothy Ho, M. Javadi, Amandeep Kaur, A. Lam, Sophia Li, Monique Miller, Jessica Ni, Hye-Sun Park, Diana J Poindexter, Helia Samani, Shrey Saretha, Maya Spencer, Michelle M Spinosa, Vivian H. Tran, Nikolina Walas, Christine Wan, Erin Xavier   +37 more
semanticscholar   +1 more source

Study on protective performance of the latest low temperature chemical oxygen self-rescuer

Meikuang Anquan, 2022
Aiming at the problem of high respiratory temperature in the existing products of chemical oxygen self rescue respirator, a new type of chemical oxygen self rescue respirator is designed.
MA Yunlong, MA Long, YANG Tiantian, HUANG Qifu   +3 more
doaj   +1 more source

A Miniaturized Electrostatic Precipitator Respirator Effectively Removes Ambient SARS-CoV-2 Bioaerosols

Viruses, 2022
The inhalation of ambient SARS-CoV-2-containing bioaerosols leads to infection and pandemic airborne transmission in susceptible populations. Filter-based respirators effectively reduce exposure but complicate normal respiration through breathing zone ...
Rachel K. Redmann, Brandon J. Beddingfield, Skye Spencer, Nicole R. Chirichella, Julian L. Henley, Wes Hager, Chad J. Roy   +6 more
doaj   +1 more source

Powered Respirators Are Effective, Sustainable, and Cost-Effective Personal Protective Equipment for SARS-CoV-2

Frontiers in Medical Technology, 2021
Objectives: The provision of high-quality personal protective equipment (PPE) has been a critical challenge during the COVID-19 pandemic. We evaluated an alternative strategy, mass deployment of a powered air-purifying respirator (PeRSo), in a large ...
Alasdair Munro, Alasdair Munro, Jacqui Prieto, Jacqui Prieto, Emmanouil Mentzakis, Mohammed Dibas, Nitin Mahobia, Peter Baker, Sarah Herbert, Trevor Smith, Matthew Hine, Joann Hall, Angie McClarren, Mike Davidson, Julie Brooks, Jane Fisher, David Griffiths, Hywel Morgan, Corrado Giulietti, Saul N. Faust, Saul N. Faust, Paul Elkington, Paul Elkington   +22 more
doaj   +1 more source

N95 respirator mask breathing leads to excessive carbon dioxide inhalation and reduced heat transfer in a human nasal cavity

The Physics of Fluids, 2021
Face masks and respirators are used to filter inhaled air, which may contain airborne droplets and high particulate matter (PM) concentrations.
Hana Salati, Mehrdad Khamooshi, S. Vahaji, F. Christo, D. Fletcher, K. Inthavong   +5 more
semanticscholar   +1 more source

Effectiveness of N95 Respirator Decontamination and Reuse against SARS-CoV-2 Virus

Emerging Infectious Diseases, 2020
The coronavirus pandemic has created worldwide shortages of N95 respirators. We analyzed 4 decontamination methods for effectiveness in deactivating severe acute respiratory syndrome coronavirus 2 virus and effect on respirator function.
R. Fischer, Dylan H. Morris, N. V. Doremalen, Shanda Sarchette, M. Matson, T. Bushmaker, C. Yinda, Stephanie N. Seifert, Amandine Gamble, Brandi N. Williamson, S. Judson, E. Wit, James O. Lloyd-Smith, James O. Lloyd-Smith, V. Munster   +14 more
semanticscholar   +1 more source

Effect of N95 Respirator on Oxygen and Carbon Dioxide Physiologic Response: A Systematic Review and Meta-Analysis

International Journal of Environmental Research and Public Health, 2022
During the COVID-19 pandemic, N95 respirators were commonly used in many situations. Respiratory problems from prolonged use of respirators were discussed in many studies, which show varied results.
Kampanat Wangsan, Ratana Sapbamrer, Wachiranun Sirikul, Jinjuta Panumasvivat, Vithawat Surawattanasakul, Pheerasak Assavanopakun   +5 more
semanticscholar   +1 more source

Adherence of SARS-CoV-2 Delta variant to a surgical mask and N95 respirators

Future Science OA, 2022
The use of facial protection has been adopted globally due to the COVID-19 pandemic. We dissected four respirators and one surgical mask into layers to determine whether or not the virus adheres to them. These individual layers were contaminated with the
Ana C Lorenzo-Leal, Selvarani Vimalanathan, Horacio Bach   +2 more
doaj   +1 more source

Association between 2019-nCoV transmission and N95 respirator use

Journal of Hospital Infection, 2020
2019-nCoV had caused pneumonia outbreak in Wuhan. Existing evidence have confirmed the human-to-human transmission of 2019-nCoV. We retrospectively collected infection data from 2 January to 22 January at six departments from Zhongnan Hospital of Wuhan ...
Xinghuan Wang, Z. Pan, Zhenshun Cheng
semanticscholar   +1 more source

N95 respirator and surgical mask effectiveness against respiratory viral illnesses in the healthcare setting: A systematic review and meta‐analysis

Journal of the American College of Emergency Physicians Open, 2021
To examine the results, level of evidence, and methodologic quality of original studies regarding surgical mask effectiveness in minimizing viral respiratory illness transmission, and, in particular, the performance of the N95 respirator versus surgical ...
Andrew P. Collins, Benjamin C. Service, Sunny Gupta, Naser Mubarak, I. Zeini, D. Osbahr, A. Romeo   +6 more
semanticscholar   +1 more source