Paul S. Mead, MD, MPH is the Chief of the Bacterial Diseases Branch (BDB), Division of Vector-Borne Diseases (DVBD) in the National Center for Emerging and Zoonotic Infectious Diseases (NCEZID). As chief of BDB, Dr. Mead works to protect the American public from bacterial diseases spread by ticks, fleas, and lice, including plague, tularemia, and Lyme disease. Dr. Mead is trained as an Infectious Disease physician and has authored numerous scientific publications and book chapters.