Use of Face Shields to Protect Against Transmission of COVID-19

Medical Xpress - Could Face Shields replace masks in preventing COVID-19. 

CDC - Efficacy of Face Shields - CDC report that face shields are protective for health care workers from initial large droplets but provide very little protection over longer periods. 

CDC - Care and use of face shields

MDH - Best practices for masks and face shields for persons with disabilities. - Information on masks with clear openings for lip reading and when face shields are appropriate as sole protection. 

JAMA ...Face Shields and the Containment of COVID-19. The authors suggest that using face shields to prevent COVID-19 transmission would be easy to implement. Data suggest that they may protect the person wearing it from large aerosol transmission. They will not protect against small aerosol transmission. 

Contagion Live - Interview with an author of the JAMA paper. Encouraging the universal use of face shields could reduce the r naught to below one. The use is based on similar diseases but not specifically on COVID-19. 

PMC - Safety Guidelines for Sterility of Face Shields for the COVID-19 outbreak - They list specifications for the design and cleaning of face shields. The chemical list is rather limited. 

Lancet - Physical Distancing, Face Masks, and Eye Protection ... Distances of 2 meters or greater are recommended to reduce transmission. All three of these measures can combine to potentially reduce exposure but not eliminate it. There is a need form more specific COVID - 19 data. 

FDA - Emergency Use Authorization for the production of face shields - The authorization lists the specific approved methods for the production of face shields. 

Interview with Michael B. Edmund on the use of face sheilds - 11:30 min.