“The safest approach combines a mask and a face shield to offer maximum protection from viral particles for yourself and for others. He notes that when a face shield is worn over a mask, it can offer the advantage of protecting the mask itself—keeping it from picking up virus particles.”
NPR Coronavirus Crisis Series, quote by Dr. Michael Edmond, August 14, 2020.
Qatar Airways now requires passengers to wear face-shields.
Policy enacted July 1, 2020.
“Face shields are far more effective.”
Eli Perencevich, MD, University of Iowa Carver College of Medicine.
A study in 2014 showed shields blocked 97% of the virus from landing on the masks, keeping them much cleaner.
Study conducted by Ph.D. William Lindsley, a bioengineer with the National Institute for Occupational Safety and Health.