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Travelers with their luggage arrive at a COVID-19 testing location at the airport in Los Angeles, Calif., on Nov. 23, 2021. Photo: Frederic J. Brown/AFP via Getty Images

The Centers for Disease Control and Prevention said Tuesday night that it is working to impose stricter testing requirements for international travelers due to the spread of the new Omicron variant.

The big picture: The new rules would require all international travelers, regardless of vaccination status, to show a negative test taken a day before their flight to the U.S. Currently, the CDC says fully vaccinated travelers are allowed to show a test taken no more than three days before their departure.

  • Unvaccinated individuals are required to show a test conducted no more than one day before their flight.

Catch up quick: CDC director Rochelle Walensky had said Tuesday during the White House COVID-19 press briefing that the agency was "evaluating how to make international travel as safe as possible, including pre-departure tests closer to time of flight."

What they're saying: "CDC is working to modify the current Global Testing Order for travel as we learn more about the Omicron variant; a revised order would shorten the timeline for required testing for all international air travelers to one day before departure to the United States," the CDC said in an emailed statement.

  • "This strengthens already robust protocols in place for international travel, including requirements for foreign travelers to be fully vaccinated."

What to watch: The CDC has not provided a timeline for when new testing rules will be implemented, but President Biden is set to provide more details on Thursday on how the administration will be fighting the coronavirus this winter.

Go deeper

Jan 15, 2022 - Health

Experts warn of more COVID-19 variants after Omicron

Three COVID-19 testing companies place testing locations outside Grand Central Terminal on Jan. 14 in New York City. Photo: Alexi Rosenfeld/Getty Images

Experts are warning that subsequent COVID-19 variants are likely to come after Omicron, AP reports.

Why it matters: The warnings come as there's no guarantee that subsequent variants "will cause milder illness or that existing vaccines will work against them," underscoring the need for widespread vaccination, AP writes.

Minneapolis and St. Paul to require vaccine or test for indoor dining

Illustration: Shoshana Gordon/Axios

New vaccine-or-test requirements for indoor dining and drinking in Minneapolis and St. Paul take effect Wednesday.

The big picture: A growing number of major cities, including Boston, Chicago and New York, have instituted similar requirements in an effort to protect public health.

Yes, but: Questions about enforcement, logistics and effectiveness of the temporary measures here remain.

Updated 4 hours ago - Energy & Environment

Bomb cyclone prompts blizzard warnings from Virginia to Maine

Computer model projection showing the intense storm off of Cape Cod on Jan 29, 2022, with heavy snow and strong winds lashing the coastline. (Weatherbell.com)

Blizzard warnings are in effect for 11 million people from coastal Virginia to eastern Maine as a historic winter storm is set to slam the Mid-Atlantic and Northeast beginning Friday.

Why it matters: The storm will bring hazards ranging from zero visibility amid hurricane force wind gusts and heavy snow, to coastal flooding that will erode vulnerable beaches and threaten property from the Jersey shore to coastal Massachusetts.