Masks that did not undergo the tests had an 81-percent rate. When worn casually, they had 100-percent leakage rates, meaning they served no useful preventive measure against the virus.

Most of what we currently know about masks, from N95s to simple cloth barriers, is based on studies of the flu and other respiratory viruses. It's unclear if the novel coronavirus is similar in ...

Microscopic spikes on the surface of the mask catch and damage viruses to reduce their virus count. The development team said it confirmed that the mask is effective against four types of viruses ...

including flu - if you have symptoms of a respiratory illness and you need to go out, our advice continues to be that you should consider wearing a face mask.” ...

O nce seen as a symbol of protection against the spread of a deadly virus, masks are now being blamed for emboldening some people to commit acts of violence amid a rise in clashes at protests over ...

the Hospital Authority chief has asked residents to brace for an impending surge in flu cases, noting it will be the city’s first winter without the mandatory mask-wearing policy enacted during ...