The U.S. government may extend the federal mask mandate for public transportation, including planes, trains, buses, airports and transit hubs, Ashish Jha, the White House's new Covid czar, told NBC's "TODAY" show on Monday.
The mandate is set to expire next Monday, April 18.
"This is a CDC decision and I think it is absolutely on the table," Jha said, adding that the director of the Centers for Disease Control and Prevention, Dr. Rochelle Walensky, "is going to make her decision based on the framework that the CDC scientists create, and we'll make a decision collectively based on that."
The mask requirement has been extended several times since it went into effect in February 2021. Before that, mask wearing on planes and trains was strongly recommended but not federally mandated. Jha said Walensky is "working on developing a scientific framework" that would determine whether to prolong the rule.
"We’re going to see that framework come out, I think, in the next few days," he added.
The mask mandate's expiration looms as the BA.2 omicron subvariant, which accounted for about 72 percent of U.S. cases as of last week and is more contagious than the original omicron variant, is driving up cases in states like Arizona, Nebraska and New York. Philadelphia announced Monday that it would reinstate its indoor mask mandate next week after cases rose more than 50 percent in the last 10 days.
Overall, the U.S. has seen a nearly 6 percent increase in average daily Covid cases over the last two weeks, according to NBC News’ tally. Many disease experts believe that current Covid infections are dramatically undercounted, however.
Last month, the attorneys general from 21 states sued President Joe Biden's administration over the transportation mask mandate. The suit says the CDC should have allowed states to enforce their own mandates, or tailored its restrictions to modes of transportation that carry the highest risk of infection. All but three of the attorneys general are from Republican-led states.
U.S. airline executives also wrote a letter to Biden last month calling for the mask requirement to end. The American Public Transportation Association similarly asked the White House to re-evaluate the policy in early March. Both letters cited growing challenges with enforcing the rule.
"Throughout the entire pandemic, we’ve wanted to make decisions based on the evidence and science," Jha told "TODAY," "and that is what I expect we’ll do again this week, once we have that."
CORRECTION (April 11, 2022, 3:50 p.m. ET): A previous version of this article misspelled the first name of the CDC director. She is Dr. Rochelle Walensky, not Rachel.