Minnesota-based 3M still ships millions of respirators, though health care is not the major market it briefly was.

To test the masks, the breath of patients with asthma or COPD were monitored for nitrite, a biomarker for inflammation in both conditions. The results showed that the masks accurately detected the ...

Pope Stable With No New Respiratory Crises but Will Sleep With Ventilation Mask, Vatican Says ROME (AP) — Pope Francis was in stable condition Tuesday and breathing with just the help of ...