Florida Atlantic University - Face shields, masks with valves ineffective against COVID-19 spread: study

Title:
Face shields, masks with valves ineffective against COVID-19 spread: study

Source:
Florida Atlantic University

Published:
Phys.org, 1 September 2020
https://phys.org/news/2020-09-shields-masks-valves-ineffective-covid-.html

From the article:
To increase public awareness about the effectiveness of face shields alone as well as face masks with exhalation valves, researchers from Florida Atlantic University's College of Engineering and Computer Science used qualitative visualizations to test how face shields and masks with valves perform in impeding the spread of aerosol-sized droplets. Widespread public use of these alternatives to regular masks could potentially have an adverse effect on mitigation efforts.

Could face shields replace masks in preventing COVID-19? [Medical Xpress, 4 June 2020]

Title:
Could face shields replace masks in preventing COVID-19?

Author:
Dennis Thompson

Published:
Medical Xpress, 4 June 2020
https://medicalxpress.com/news/2020-06-shields-masks-covid-.html

From the article:
Plastic face shields offer another means of deterring COVID-19 that some might find easier, said Dr. Amesh Adalja, a senior scholar with the Johns Hopkins Center for Health Security, in Baltimore.