![FILE PHOTO: Dr. Rochelle Walensky, U.S. President-elect Joe Biden's appointee to run the U.S. Centers for Disease Control and Prevention (CDC), removes her mask to speak as Biden announces nominees and appointees to serve on his health and coronavirus response teams during a news conference at his transition headquarters in Wilmington, Delaware, U.S., December 8, 2020. REUTERS/Kevin Lamarque/File Photo](https://thenational-the-national-prod.cdn.arcpublishing.com/resizer/v2/R6KLZWEGNBSQFVVRL3UEY6EFNA.jpg?smart=true&auth=2134be3a26b66560833ad436880ab2813b38d4dd2a4a8206cce7919af59144ca&width=400&height=225)
Dr Rochelle Walensky advised Americans to take precautions over the further spread of the highly transmissible UK variant of the coronavirus. Reuters
Dr Rochelle Walensky advised Americans to take precautions over the further spread of the highly transmissible UK variant of the coronavirus. Reuters
British coronavirus variant rapidly spreading in US, study shows
Health authority urges people to keep guard up