Sign up for our daily briefing

Make your busy days simpler with the Axios AM and PM newsletters. Catch up on what's new and why it matters in just 5 minutes.

Please enter a valid email.

Please enter a valid email.

Subscription failed
Thank you for subscribing!

Catch up on the day's biggest business stories

Subscribe to the Axios Closer newsletter for insights into the day’s business news and trends and why they matter.

Please enter a valid email.

Please enter a valid email.

Subscription failed
Thank you for subscribing!

Sign up for Axios Pro Rata

Dive into the world of dealmakers across VC, PE and M&A with Axios Pro Rata. Delivered daily to your inbox by Dan Primack and Kia Kokalitcheva.

Please enter a valid email.

Please enter a valid email.

Subscription failed
Thank you for subscribing!

Sports news worthy of your time

Binge on the stats and stories that drive the sports world with the Axios Sports newsletter. Sign up for free.

Please enter a valid email.

Please enter a valid email.

Subscription failed
Thank you for subscribing!

Tech news worthy of your time

Get our smart take on technology from the Valley and D.C. with Axios Login. Sign up for free.

Please enter a valid email.

Please enter a valid email.

Subscription failed
Thank you for subscribing!

Get the inside stories

Get an insider's guide to the new White House with Axios Sneak Peek. Sign up for free.

Please enter a valid email.

Please enter a valid email.

Subscription failed
Thank you for subscribing!

Catch up on coronavirus stories and special reports, curated by Mike Allen everyday

Catch up on coronavirus stories and special reports, curated by Mike Allen everyday

Please enter a valid email.

Please enter a valid email.

Subscription failed
Thank you for subscribing!

Want a daily digest of the top Denver news?

Get a daily digest of the most important stories affecting your hometown with Axios Denver

Please enter a valid email.

Please enter a valid email.

Subscription failed
Thank you for subscribing!

Want a daily digest of the top Des Moines news?

Get a daily digest of the most important stories affecting your hometown with the Axios Des Moines newsletter.

Please enter a valid email.

Please enter a valid email.

Subscription failed
Thank you for subscribing!

Want a daily digest of the top Twin Cities news?

Get a daily digest of the most important stories affecting your hometown with Axios Twin Cities

Please enter a valid email.

Please enter a valid email.

Subscription failed
Thank you for subscribing!

Want a daily digest of the top Tampa Bay news?

Get a daily digest of the most important stories affecting your hometown with the Axios Tampa Bay newsletter.

Please enter a valid email.

Please enter a valid email.

Subscription failed
Thank you for subscribing!

Want a daily digest of the top Charlotte news?

Get a daily digest of the most important stories affecting your hometown with Axios Charlotte

Please enter a valid email.

Please enter a valid email.

Subscription failed
Thank you for subscribing!

Want a daily digest of the top Nashville news?

Get a daily digest of the most important stories affecting your hometown with the Axios Nashville newsletter.

Please enter a valid email.

Please enter a valid email.

Subscription failed
Thank you for subscribing!

Want a daily digest of the top Columbus news?

Get a daily digest of the most important stories affecting your hometown with the Axios Columbus newsletter.

Please enter a valid email.

Please enter a valid email.

Subscription failed
Thank you for subscribing!

Want a daily digest of the top Dallas news?

Get a daily digest of the most important stories affecting your hometown with the Axios Dallas newsletter.

Please enter a valid email.

Please enter a valid email.

Subscription failed
Thank you for subscribing!

Want a daily digest of the top Austin news?

Get a daily digest of the most important stories affecting your hometown with the Axios Austin newsletter.

Please enter a valid email.

Please enter a valid email.

Subscription failed
Thank you for subscribing!

Want a daily digest of the top Atlanta news?

Get a daily digest of the most important stories affecting your hometown with the Axios Atlanta newsletter.

Please enter a valid email.

Please enter a valid email.

Subscription failed
Thank you for subscribing!

Want a daily digest of the top Philadelphia news?

Get a daily digest of the most important stories affecting your hometown with the Axios Philadelphia newsletter.

Please enter a valid email.

Please enter a valid email.

Subscription failed
Thank you for subscribing!

Want a daily digest of the top Chicago news?

Get a daily digest of the most important stories affecting your hometown with the Axios Chicago newsletter.

Please enter a valid email.

Please enter a valid email.

Subscription failed
Thank you for subscribing!

Sign up for Axios NW Arkansas

Stay up-to-date on the most important and interesting stories affecting NW Arkansas, authored by local reporters

Please enter a valid email.

Please enter a valid email.

Subscription failed
Thank you for subscribing!

Want a daily digest of the top DC news?

Get a daily digest of the most important stories affecting your hometown with the Axios DC newsletter.

Please enter a valid email.

Please enter a valid email.

Subscription failed
Thank you for subscribing!

Please enter a valid email.

Please enter a valid email.

Subscription failed
Thank you for subscribing!

Illustration: Aïda Amer/Axios

Businesses, employers and universities are taking the data into their own hands and requiring booster coronavirus shots.

Why it matters: Three shots work better than two at preventing infection, especially against the Omicron variant. But competing definitions of "fully vaccinated" based on where you live or work will inevitably confuse people.

Driving the news: Booster requirements are steadily rolling out across the country, even though the federal definition of "fully vaccinated" hasn't yet changed from two shots of Moderna or Pfizer and one of J&J.

The intrigue: Americans are split on what they think the definition of fully vaccinated is, according to Harris polling provided exclusively to Axios.

  • 49% of adults said that "fully vaccinated" means two shots of Pfizer or Moderna or one shot of J&J, and 51% said that "fully vaccinated" now includes a booster.
  • Nearly two-thirds of seniors feel that a booster is required to be fully vaccinated.

Between the lines: Even before the Omicron variant emerged, data had clearly shown that the protection offered by two doses of Pfizer and Moderna's vaccines against infection waned over time, although it remained very high against severe disease.

  • A third shot given several months later raised protection against infection to levels even higher than they were right after the second shot.
  • Data also showed that a booster shot offered much stronger protection against infection than one shot of J&J's vaccine.
  • Now, preliminary data suggests that two shots of mRNA vaccines and one shot of J&J aren't very effective at all against Omicron infection, but booster shots are.

What they're saying: When asked by a reporter yesterday about changing the official definition of fully vaccinated, CDC Director Rochelle Walensky didn't give any hints about when that may happen.

  • "We are continuing to follow that science and it is literally evolving daily.  And as that science evolves, we will continue to review the data and update our recommendations as necessary," she said.

Go deeper

Updated 4 hours ago - Politics & Policy

Omicron dashboard

Illustration: Shoshana Gordon/Axios

  1. Health: Fauci: "Confident" Omicron cases will peak in February.
  2. Vaccines: The shifting definition of fully vaccinated.
  3. Politics: New York Supreme Court strikes down Gov. Hochul's mask mandate for public areas — Sarah Palin tests positive for COVID, delaying defamation trial — Virginia school boards sue Gov. Youngkin for lifting mask mandate.
  4. World: U.K. to lift travel testing requirement for fully vaccinated — Beijing Olympic Committee lowers testing threshold ahead of Games.
  5. Variant tracker
Updated Jan 14, 2022 - Axios Twin Cities

Questions about Twin Cities indoor dining vaccine mandates, answered

Illustration: Brendan Lynch/Axios

Vaccine-or-test mandates for indoor dining go into effect in Minneapolis and St. Paul on Wednesday, Jan. 19. Here are answers to some common questions on the orders:

Q: Are all restaurants covered by the requirement?

A: No, St. Paul's order only covers establishments licensed by the city. That means coffee shops, fast food chains and other places that do not serve alcohol are exempt, according to the Pioneer Press.

FDA limits use of Regeneron and Lilly COVID antibody treatments

A coldbox containing monoclonal antibody treatments at a Regeneron clinic in Pembroke Pines, Florida, in August. Photo: Eva Marie Uzcategui/Bloomberg via Getty Images

The FDA said Monday it's limiting the use of two monoclonal antibody therapies as COVID-19 treatments because data indicates they're "highly unlikely" to be effective against the dominant Omicron variant.

Driving the news: The FDA revised the authorizations for Regeneron and Eli Lilly "to limit their use to only when the patient is likely to have been infected with or exposed to a variant that is susceptible to these treatments," per a statement from the agency.