BMJ - A Cluster Randomised trial of cloth masks compared with medical masks in healthcare workers C Raina MacIntyre et al Filtration was extremely poor (almost 0%) for the cloth mask Observations during SARS suggested double-masking and other practices increased the risk of infection because of moisture, liquid diffusion and pathogen retention
MASK WHISTLEBLOWERS TELL ALL
Government trained OSHA mask experts Tammy Clark & Kristen Meghan join Del in-studio to break down vital info on masks, PPE, and their role in #Covid19 prevention Every adult on this planet wearing a mask needs to hear this riveting discussion