Shortly after Axios scooped that a White House official and a staff member for House Speaker Nancy Pelosi (D-Calif.) both tested positive for the virus, the phones for Axios reporters blew up with congressional aides saying the problem is even more widespread on the Hill.

The Office of the Attending Physician indicated as much, sending a letter to members Tuesday afternoon confirming “several vaccinated congressional staff members and one member of Congress have acquired infection in this circumstance.”

“The Delta variant virus has been detected in Washington, D.C., and in the Capitol buildings,” attending physician Brian P. Monahan wrote.

The letter did not instruct lawmakers to implement new protocols but urged them to stay tuned.