Standard surgical masks don’t fully seal around a person’s face, allowing for more participle exposure. But simply adding two rubber bands may improve the seal and offer N95 respirator-level ...

More than two years into the COVID-19 pandemic, scientists are still scratching their head over a basic question: Is there something they could measure to tell if people are protected? Researchers ...

A simple modification to a surgical mask using rubber bands can improve its protective seal against particle exposure to the level of an N95 respirator, a study suggests. Throughout the COVID-19 ...

High levels of exposure to the virus that causes COVID-19 may reduce or overcome the protection that vaccination and prior infection provides, according to a new study by researchers from Yale ...