Director draws praise, criticism from observersSince President-elect Barack Obama accepted the resignation of the head of the nation’s leading public health agency last week, her admirers and detractors have been arguing about her legacy and the future of the Atlanta-based research facility. During Dr. Julie Gerberding’s six years directing the Centers for Disease Control and Prevention, critics lambasted her, accusing her of sacrificing science for politics and carrying the Bush agenda on global warming and other issues into the world of scientific research. Her defenders countered that she kept the agency above political concerns and expanded its mission to include...