The White House ordered the removal of language from a federal health coronavirus plan that recommended warning elderly and physically vulnerable Americans not to fly on commercial airlines.

The reason for the change is unknown, according to the AP’s source who had direct knowledge of the original plan submitted by the Centers for Disease Control and Prevention. The White House denied the report. The press secretary for Vice President Mike Pence, Katie Miller, took to Twitter on Saturday and wrote, “Nope, not true. AP reporting off one unnamed individual.” Miller also tweeted that the “story is complete fiction. It was never a recommendation to the Task Force.”

One of the administration’s top health officials, Dr. Anthony Fauci, also denied the report on Fox News Sunday.

But as Trump continues to downplay the extent of the virus in the U.S., Fauci told host Chris Wallace, “We are having, obviously, an acceleration in cases now. If you look at it, every day we have more and more.”