Wearing a mask is critical to reducing the spread of COVID-19, but rigorous tests conducted on behalf of CBC's Marketplace found that while some work very well, others offer little protection from the ...

Colin Furness is an infection control epidemiologist, and at the University of Toronto, an assistant professor in the faculty of information and assistant professor at the Dalla Lana School of Public ...

With the Omicron variant continuing to surge into January, you may have noticed more people opting to wear an N95 mask — but those highly protective masks, usually reserved for medical settings, can ...

Though mask restrictions are easing across the country (and around the world), officials say you shouldn’t be taking off your masks just yet, especially if you’re in crowded places or starting to ...

Health officials continue to provide best practices on how to protect ourselves from COVID-19. New research shows the latest mask efficacy. To be fair to health officials, they are only providing the ...

The question: Health officials have been urging people to wear face masks in public places. Is the goal to prevent me from spreading COVID-19 to other people if I’m infected? Or is it to shield me ...

“My mask protects you and your mask protects me,” we are told. But to what extent does a cloth mask also protect you from the novel coronavirus? The evidence is a lot less clear, experts tell Global ...

Every winter, as Delhi’s air thickens with smog, masks return as our go-to protection. They do help filter harmful particulate matter, but poor mask hygiene can ironically do more harm than good. A ...

NBC Select independently determines what we cover and recommend. When you click on or buy through our links, we may earn a commission. Learn more. Fewer people wear face masks than during the Covid-19 ...

Felix Li is a retired public health specialist and epidemiologist. Dr. Li has more than 30 years of experience, including 23 with the Public Health Agency of Canada, where he actively participated in ...

1:51 Air masks: How effective are they? With much of the province experiencing smoky skies, some feel the need to wear a medical mask or other barrier to prevent breathing in toxins from the smoke.

Given a global shortage of N95 respirator masks, Ottawa police will don their force-issued gas masks as protection should a call dictate officers could be exposed to the novel coronavirus, according ...