Jerrold J. Ellner, MD, has been appointed chief of the section of infectious diseases at Boston Medical Center and professor of medicine in the department of medicine at Boston University School of Medicine. Ellner previously had served as chair of the department of medicine at the New Jersey Medical School of the University of Medicine and Dentistry of New Jersey from 2002 to 2006, and was most recently professor of medicine and scientific director of the Center for Emerging Pathogens at UMDNJ. Ellner joined the faculty at Case Western Reserve University as an assistant professor in 1976 and was promoted to professor of medicine and pathology in 1983. He served as chief of the division of infectious diseases at Case Western Reserve University and University Hospitals of Cleveland from 1979 through 1996. Ellner also served as vice-chair, executive vice chair and interim chair of the department of medicine at Case Western Reserve University. He was director of the Tuberculosis Research Unit at Case Western Reserve University from 1994 through 1999.