Atlanta's Centers for Disease Control and Prevention has canceled a summit next month on climate change and health.
According to the Associated Press, CDC officials have told other people involved in the meeting that the Trump administration did not ask or order that it be canceled.
Instead, the agency said it took the step because of concern about how the new administration would view the summit.
Erik Olson, the director of the health program at the environmental nonprofit Natural Resources Defense Council, said one of the council's scientists planned to attend the conference.
"We're very disappointed that this has been canceled," Olson said. "It's something that is exactly the kind of conference that the Centers for Disease Control Prevention should be hosting."
The CDC emailed participants last month that the conference was postponed. But the agency confirmed the cancelation on Monday.
CDC officials said the agency may reschedule.