In a recent study posted to the medRxiv* preprint server, researchers in the United States assessed the efficiency of facemasks in severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) ...

A new study in The Lancet demonstrates that face coverings dramatically reduce the load of SARS-CoV-2 in exhaled breath from infected persons. The reductions reached as high as 98 percent, with ...

Three years after a global pandemic prompted public health officials to recommend widespread mask-wearing, social media users warned that people who wore masks unknowingly subjected themselves to ...

Dr. Eric Westman was helping a Durham nonprofit organization provide free masks to people who need them when he decided he should find out whether the masks would really prevent the spread of ...