They should be worn by people who are symptomatic or have tested positive, to reduce transmission of the virus. Beyond that, it's not clear that mass enforceme

They should be worn by people who are symptomatic or have tested positive, to reduce transmission of the virus. Beyond that, it's not clear that mass enforcement of nonpharmaceutical interventions - ie masks, lockdowns, etc - will be a net win for public health. For example, the next winter or two could present a very bad flu season, all due to the mass isolation and hyper-sanitizatoin we've come to be familiar with through the pandemic [1]. [1] The impact of COVID-19 nonpharmaceutical interventions on the future dynamics of endemic infections https://www.pnas.org/content/117/48/30547 https://www.pnas.org/content/117/48/30547