On reviewing the evidence, including studies published after the pandemic, the data suggest respirators are more effective than masks in healthcare, but must be continuously worn to be protective.

On reviewing the evidence, including studies published after the pandemic, the data suggest respirators ... from 3M in the form of an Australian Research Council Industry Linkage grant in 2010 (where ...

Manufacturing giant 3M said it has an agreement with the ... the 1950 Defense Production Act to stop exporting such masks, also known as respirators. The move to block such masks, which are ...