Reason For Mask Guidance Change: Vaccinated People Rarely Transmit; Shots Are Effective Against Variants

Why The C.D.C. Changed Its Advice On Masks by Apoorva Mandavilli.  The New York Times.  May 19, 2021.  

Masks May Have Benefit For Those With Seasonal Allergies

 Can Wearing A Mask Reduce My Allergy Symptoms?  by Dani Blum.  The New York Times.  March 31, 2021.  

Adapting To Aerosol Transmission In Regulations, Masking, And Ventilation Systems

Scientists Call On C.D.C. To Set Air Standards For Workplaces, Now by Apoorva Mandavilli.  The New York Times.  February 17, 2021.