FDA drug center head fired after commissioner's exit, replaced by Davis

The U.S. Food and Drug Administration's drug center sees a leadership change as acting head Tracy Beth Hoeg departs, replaced by deputy Michael Davis. This follows Commissioner Marty Makary's exit amid agency-wide shifts. Karim Mikhail now leads the biologics center, and Lowell Zeta is acting chief of staff. Hoeg's tenure included efforts to revise childhood vaccination schedules.