Staff at the Centers for Disease Control and Prevention have been told to halt all communication with the World Health Organization.

Experts say the sudden stoppage is a surprise and will set back work on investigating and trying to stop outbreaks of Marburg virus and mpox in Africa.

A World Health Organization spokesperson declined to comment on the move. The Department of Health and Human Services, which oversees the CDC, did not immediately respond to a request for comment.

In this April 15, 2020 file photo, the logo and building of the World Health Organization (WHO) headquarters in Geneva, Switzerland.

This afternoon, the Associated Press is reporting that United States officials have officially ordered all public health officers to cease working at the World Health Organization just days after President Donald Trump signed an executive order pulling the United States out of the World Health Organization.

NEW YORK — U.S. public health officials have been told to stop working with the World Health Organization ... the stop-work policy applied to “all CDC staff engaging with WHO through technical ...

Health officials at the Center for Disease Control have reportedly been ordered to stop working with the World Health Organization, following Trump's criticisms on the agency.

Trump announced the US would withdraw from the World Health Organization in January 2023 in one of his final acts as President, but has now hinted at a U-turn

Trump initially removed the U.S. from the WHO in 2020, but Biden reversed his action before it went into effect.

One executive order that President Donald Trump signed during his first week in office was the withdrawal of the U.S. from the World Health Organization (WHO).

Four viruses are going around in what some have called a quad-demic.  They are flu, COVID-19, norovirus, and RSV. Several viruses have been on the rise since November, the CDC said. Pennsylvania is considered to have a high rate of respiratory illnesses.