This claim has been repeated and debated by professionals for the past three months. Air-quality monitors take 10 seconds on average to adjust to the air quality in an environment, so they are not ...

Editor's note: Find the latest COVID-19 news and guidance in Medscape's Coronavirus Resource Center. Wearing a mask to protect against transmission of COVID-19 does not decrease oxygen saturation, ...

A viral video questions the safety of face masks by using a gas detector to purportedly show that masks result in dangerous oxygen levels for the wearer. But experts — and the company that makes the ...

Wearing a face mask is one way to help prevent the spread of the COVID-19 virus, according to health care officials. However, they are sometimes uncomfortable and confining and have even become a ...

Doctors and other healthcare workers are taking to Twitter to show that their blood oxygen levels are completely normal while wearing masks. As compulsory mask-wearing laws become more common across ...

Wearing a face mask is one way to help prevent the spread of the COVID-19 virus, according to health care officials. However, they are sometimes uncomfortable and confining and have even become a ...