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Surgical masks as good as respirators for flu and virus protection - CT Plus - UT Southwestern
How well do face masks protect against COVID-19? - Mayo Clinic
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Which type of face mask is most effective against COVID-19? | News
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Multi-Year Study Compares Surgical Masks to Respirators for Flu and Respiratory Virus Protection | Children's Hospital Colorado
California State University, Los Angeles - Upgrade your protection against COVID-19 by wearing N95, KN95, KF94, or surgical masks. Surgical masks and higher-level PPE offer greater protection against the virus than cloth
Surgical masks as good as respirators for flu and respiratory virus protection: Newsroom - UT Southwestern, Dallas, TX
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Upgrading Face Masks For Older and Immunocompromised
