A federal scientific publication has returned from a forced two-week hiatus with two papers examining the health effects of wildfires in Hawaii and California.

At issue is what happened last summer to an email sent to the CDC from a now-departed HHS adviser, Dr. Paul Alexander. Kent testified that she believed the order to delete the email came from Redfield. Redfield said Thursday in a statement that “regarding the email in question, I instructed CDC staff to ignore Dr. Alexander’s comments. “I considered this to be very unusual,” she said, according to the partial transcript released by Clyburn. Certain “persons in the agency, like center directors and the director, their email, you know, cannot be deleted,” she said.