COVID-19 strikes close to home for one family after one person spread the virus to multiple family members. 

Pfizer has updated its data on its coronavirus vaccine, saying it's now showing a 95% effectiveness rate. Dr. Peter Hotez from the Baylor College of Medicine in Houston explains what the latest findings mean.

A Danish study questions the effectiveness of face masks. Dr. Angela Rasmussen from the Georgetown Center for Global Health Science & Security explains.

Google Maps has a new feature called the COVID Layer, which provides real-time data on the coronavirus. 

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