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.

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

Officials from the Centers for Disease Control and Prevention have been ordered to stop working with the World Heath Organization immediately, following President Donald Trump’s executive order withdrawing the U.

In line with Trump's executive order to end all collaboration with the WHO, the CDC has been instructed to end all communications and work with the international public health agency.