OverviewFlies carry disease by transporting infectious agents on their feet. They may spread salmonellosis, typhoid, and other diseases. (Image courtesy of the Centers for Disease Control and Prevention.)
Update Date 8/31/2014
Updated by: Jatin M. Vyas, MD, PhD, Assistant Professor in Medicine, Harvard Medical School; Assistant in Medicine, Division of Infectious Disease, Department of Medicine, Massachusetts General Hospital, Boston, MA. Also reviewed by David Zieve, MD, MHA, Isla Ogilvie, PhD, and the A.D.A.M. Editorial team.