During a public health emergency, the @US_FDA can use its Emergency Use Authorization authority to allow use of unapproved medical products, or unapproved uses of approved medical products,to diagnose, treat,or prevent serious or life-threatening diseases. https://go.usa.gov/xvyet  

During a public health emergency, the @US_FDA can use its Emergency Use Authorization authority to allow use of unapproved medical products, or unapproved uses of approved medical products,to diagnose, treat,or prevent serious or life-threatening diseases. https://go.usa.gov/xvyet 
Source: Food and Drug Adminstration (FDA): CDRHNew - Category: Medical Devices Authors: Source Type: news