Dr. Ambrose is a member of the working group on ‘Skin and Skin Structure Infection-Community-Acquired Pneumonia’ for The Biomarkers Consortium at the National Institutes of Health, Bethesda, Maryland, USA and is a member of the ‘ReAct: Action on Antibiotic Resistance’ Working Group in Uppsala, Sweden. Moreover, Dr. Ambrose serves as the chairperson of the United States Antimicrobial Susceptibility Test Committee (USCAST). He is Editor of Antimicrobial Agents Chemotherapy and an Editorial Board Member of the Journal of Infectious Disease Pharmacotherapy. Dr. Ambrose is the author of over 120 peer-reviewed scientific publications and approximately 170 scientific abstracts. Dr. Ambrose has served as an Editor for four textbooks; most notably the 1st and 2nd Editions of Antimicrobial Pharmacodynamics in Theory and Clinical Practice.