The New York TimesFace Shields and Valved Masks Offer More Comfort but Less Protection (Published 2020)Sep 2, 2020Tara Parker-PopeBy Tara Parker-Popemore_vert
Livescience.comVisualization shows face shields may not protect against COVID-19 spreadSep 1, 2020Rachael RettnerBy Rachael Rettnermore_vert
Phys.orgFace shields, masks with valves ineffective against COVID-19 spread: studySep 1, 2020more_vert