The Centers for Disease Control and Prevention (CDC) has changed its guidelines about masks and respirators a number of times over the past two years and gave its most recent update on January 14, ...

Christian L'Orange receives funding associated with the testing and evaluation of testing masks including fee-for-service testing and funding from the World Health Organization. The Centers for ...

A new study examines the efficacy of particle filtration by woven fabric, which consists of fibers twisted together into yarns. There are, therefore, two lengthscales: the diameters of the fiber and ...

Face masks are important for slowing the spread of COVID-19 and protecting against smoke. Per- and polyfluoroalkyl substances (PFAS) are added to many products to repel fluids, but their presence in ...

Properly fitted N95 masks should filter 94-95 percent of viral particles. Justin Sullivan / Getty Images The story of the United States’ evolving relationship with masks is a complicated one. When the ...

Is my cloth mask good enough to face the delta variant? September 28, 2021 by Amanda Michelle Gomez - Kaiser Health News (TNS) | Updated September 28, 2021 at 2:00 p.m.