Lynn Dekleva, who recently took a senior role at the agency, once led an aggressive effort by industry to block regulations on formaldehyde.
Federal regulators will no longer require patients to provide blood tests before receiving the drug from pharmacies.
The outbreak has been traced, tentatively, to three children who ate a bat, the W.H.O. said, and known threats like Ebola and Marburg have been ruled out.
The Trump administration’s deep cuts to clean-energy programs is raising concerns about U.S. commitments to the lender.