A U.S. Centers for Disease Control and Prevention report revealed that, of the symptomatic adults with COVID-19, 70.6% always wore a mask an

https://www.nih.gov/news-events/news-releases/bacterial-pneumonia-caused-most-deaths-1918-influenza-pandemic #1918flu #breathfreeandlive

https://youtu.be/zWQxNoqKE6E #breathefreeandlive #mouthbreathing