I became interested in masks professionally when our Stanford laboratory director, Larry Chu, and I did some work about masks for medical professionals and their use in the community. We then teamed up with the World Health Organization and the Stanford professors Steven Chu and Yi Cui to improve information about masking in the community. Five nursing friends of my daughter, who is a nurse practitioner working in intensive care, died from covid-19. Simple community mask wearing helped keep my family virus-free until my husband was admitted to hospital with a broken femur. After four weeks of negative covid-19 tests in hospital, he then tested positive and died in hospital from covid-19. He was alone from the ambulance trip until he died. None of us were allowed to visit even once…more