DUBLIN, Ireland -- A doctor based in Dublin, Ireland, has debunked the idea that a face mask lowers oxygen levels. In fact, he's shown that even wearing several has no effect. This video shows Maitiu ...

Wearing a mask is proven by evidence to reduce the risk of coronavirus, despite common myths and misinformation that it is unsafe or ineffective.

A new study suggests that face masks have a negligible negative effect on the levels of carbon dioxide and oxygen that a person breathes. All data and statistics are based on publicly available data ...

The #CoronavirusFacts database records fact-checks published since the beginning of the COVID-19 outbreak. The pandemic and its consequences are constantly evolving and data that was accurate weeks or ...