• Home
  • Latest
  • Fortune 500
  • Finance
  • Tech
  • Leadership
  • Lifestyle
  • Rankings
  • Multimedia
Health

It’s not clear whether ‘mutant’ COVID strain has made it from the U.K. to the U.S.

By
Bloomberg
Down Arrow Button Icon
By
Bloomberg
Down Arrow Button Icon
December 20, 2020, 12:04 PM ET

It’s not clear whether a more transmissible variant of the coronavirus that prompted tighter restrictions in the U.K. has made its way to the U.S., according to Moncef Slaoui, chief scientific adviser for the government’s vaccine acceleration program.

“We don’t know,” Slaoui said on CNN’s “State of the Union.” on Sunday. “We’re looking at that.”

Assistant Secretary for Health Brett Giroir questioned the threat posed by the virus changes cited by the U.K. government, saying the coronavirus blamed for Covid-19 has mutated more than 4,000 times since its discovery. There’s no imminent need to suspend flights from the U.K., he said on ABC’s “This Week.”

“We don’t know that it’s more dangerous, and very importantly we have not seen a single mutation yet that would make it evade the vaccine,” and while that can’t be ruled out for the future, “I don’t think there should be any reason for alarm right now,” Giroir said.

The new variant may be as much as 70% more transmissible, which led U.K. Prime Minister Boris Johnson to announce a lockdown for London and large parts of southeast England on Saturday. He canceled plans to ease pandemic restrictions for five days over the holidays, and banned household mixing in London and the southeast while restricting socializing to just Christmas Day across the rest of England.

Vaccinate Trump?

Even if the variant does become more widespread, Slaoui said the vaccines that are now rolling out will provide protection against it. That includes the Moderna Inc. vaccine that received approval from U.S. regulators Friday, and Slaoui said the first shots are expected to be administered Monday.

Giroir, a member of the White House coronavirus task force, urged President Donald Trump to get vaccinated against Covid-19 to promote acceptance of immunization among his supporters.

“Again, we have every reason to believe that these two vaccines are very effective and they are safe,” he said. “So I would encourage the president to get a vaccine for his own health and safety, and also to generate more confidence among the people who follow him so closely.”

Vice President Mike Pence and his wife Karen Pence received the coronavirus vaccine developed by Pfizer Inc. and BioNTech SE in a televised event at the White House on Friday.

About the Author
By Bloomberg
See full bioRight Arrow Button Icon

Latest in Health

Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025

Most Popular

Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Rankings
  • 100 Best Companies
  • Fortune 500
  • Global 500
  • Fortune 500 Europe
  • Most Powerful Women
  • Future 50
  • World’s Most Admired Companies
  • See All Rankings
Sections
  • Finance
  • Leadership
  • Success
  • Tech
  • Asia
  • Europe
  • Environment
  • Fortune Crypto
  • Health
  • Retail
  • Lifestyle
  • Politics
  • Newsletters
  • Magazine
  • Features
  • Commentary
  • Mpw
  • CEO Initiative
  • Conferences
  • Personal Finance
  • Education
Customer Support
  • Frequently Asked Questions
  • Customer Service Portal
  • Privacy Policy
  • Terms Of Use
  • Single Issues For Purchase
  • International Print
Commercial Services
  • Advertising
  • Fortune Brand Studio
  • Fortune Analytics
  • Fortune Conferences
  • Business Development
About Us
  • About Us
  • Editorial Calendar
  • Press Center
  • Work At Fortune
  • Diversity And Inclusion
  • Terms And Conditions
  • Site Map

© 2025 Fortune Media IP Limited. All Rights Reserved. Use of this site constitutes acceptance of our Terms of Use and Privacy Policy | CA Notice at Collection and Privacy Notice | Do Not Sell/Share My Personal Information
FORTUNE is a trademark of Fortune Media IP Limited, registered in the U.S. and other countries. FORTUNE may receive compensation for some links to products and services on this website. Offers may be subject to change without notice.


Most Popular

placeholder alt text
Retail
Trump just declared December 26th a national holiday. What's open and closed?
By Dave SmithDecember 26, 2025
1 day ago
placeholder alt text
Success
As millions of Gen Zers face unemployment, CEOs of Amazon, Walmart, and McDonald's say opportunity is still there—if you have the right mindset
By Preston ForeDecember 26, 2025
1 day ago
placeholder alt text
Investing
Logan Paul auctions off $5.3 million Pokémon card, urging young people to invest more in nontraditional assets: 'Don't be afraid to take a risk'
By Sydney LakeDecember 25, 2025
2 days ago
placeholder alt text
Real Estate
Mark Zuckerberg gifted noise-canceling headphones to his Palo Alto neighbors because of the nonstop construction around his 11 homes
By Dave SmithDecember 25, 2025
2 days ago
placeholder alt text
Economy
Trump's tariffs actually slashed the deficit from a record $136.4 billion to less than half that. Here's what else they did
By Wyatte Grantham-Philips, Paul Wiseman and The Associated PressDecember 26, 2025
1 day ago
placeholder alt text
Success
Billionaire philanthropy's growing divide: Mark Zuckerberg stops funding immigration reform as MacKenzie Scott doubles down on DEI
By Ashley LutzDecember 22, 2025
5 days ago

Latest in Health

work
Future of WorkManagement
Management professors who studied the dreaded work offsite say think twice about skipping it this year
By Madeline Kneeland, Adam M. Kleinbaum and The ConversationDecember 27, 2025
6 hours ago
PJ's
HealthHoliday Season
Why you feel so anxious and stressed during the holidays, even though you’re probably just sitting around, watching TV and eating
By Stacy Shaw and The ConversationDecember 26, 2025
1 day ago
AIChatbots
‘He satisfies a lot of my needs’: Meet the women in love with ChatGPT
By Beatrice NolanDecember 26, 2025
1 day ago
Man checking watch as he walks through forrest
Successchief executive officer (CEO)
CEOs reveal their New Year’s resolutions for 2026: From 8-day bike races and AI training, to finally cracking 7 hours of sleep a night
By Emma BurleighDecember 24, 2025
3 days ago
Best protein lead image
HealthDietary Supplements
The 9 Best Protein Powders of 2025: How to Choose, According to an RD
By Christina SnyderDecember 23, 2025
4 days ago
Transparent Labs Creatine HMB as best creatine
HealthDietary Supplements
The Best Creatine Supplements of 2025: Tested and Approved
By Christina SnyderDecember 23, 2025
4 days ago