In interviews with CNN, senior administration officials in Washington, as well as top officials at the Center for Disease Control and Prevention in Atlanta describe a growing sense of mistrust and animosity between the White House and CDC over how quickly the US should reopen and how the government tracks data on the virus.

In particular, Dr. Deborah Birx, coordinator for the President’s coronavirus task force, has become increasingly critical of the CDC, making clear in recent meetings that she is more than frustrated with the agency, according to two senior administration officials. Specifically, Birx believes the way the CDC gathers data on the coronavirus is antiquated, causing inaccurate and delayed numbers on both virus cases and deaths.

Birx has expressed her agitation during recent task force meetings, where at least one conversation between her and CDC Director Robert Redfield has grown heated, according to a source close to the task force.