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 ...

PHILADELPHIA -- Two years into the COVID-19 pandemic, the public debate on masks is as heated as ever -- especially in Philadelphia, which earned national attention for once again requiring masks in ...

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 ...

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.

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 ...