The evidence concerning how effective homemade masks are effective in preventing the spread of the novel coronavirus is "inconclusive," and more research is needed, doctors on an infectious diseases ...

They are the three “F’s” of face coverings: fit, fibers and (air) flow. According to medical and environmental professionals, these are the primary factors that determine how effective a homemade mask ...

PORTLAND, Ore — Gov. Kate Brown urged Oregonians on Tuesday to follow new guidelines from the Centers for Disease Control and Prevention by wearing homemade, cloth masks in an effort to stop the ...