Four members said they were informed of the termination Friday, but it had already taken effect in late March, according to a CDC letter.

The Trump administration has terminated a federal advisory committee that issued guidance about preventing the spread of infections in health care facilities.

The Healthcare Infection Control Practices Advisory Committee (HICPAC) crafted national standards for hand-washing, mask-wearing and isolating sick patients that most U.S. hospitals follow.

Four committee members said the Centers for Disease Control and Prevention delivered the news about HICPAC’s termination to members Friday.