Expert Bios

Below are the experts– both in the field and at the staff level– involved in this effort from the partnering societies.

Sara E. Cosgrove, MD, MSSara E. Cosgrove, MD, MS

Sara E. Cosgrove, MD, MS, is an Associate Professor of Medicine in the Division of Infectious Disease at Johns Hopkins University School of Medicine, and the program co-chair for the Antimicrobial Stewardship leader forum at the SHEA Spring 2012 Conference: Advancing Healthcare Epidemiology and Antimicrobial Stewardship.

She serves as the Director of the Antimicrobial Stewardship Program and the Associate Hospital Epidemiologist at The Johns Hopkins Hospital in Baltimore, Maryland. Dr. Cosgrove received her undergraduate degree from Columbia College in New York, New York, her medical degree from Baylor College of Medicine in Houston, Texas, and her master of science degree in epidemiology from Harvard School of Public Health in Boston, Massachusetts. She completed her postgraduate training in internal medicine at The Johns Hopkins Hospital and underwent subsequent training in infectious disease at Beth Israel Deaconess Medical Center in Boston. Dr. Cosgrove’s research interests the epidemiology and outcomes of antimicrobial resistance, the development of tools and programs to promote the rational use of antimicrobials, and the prevention of hospital-acquired infections.


Marla Dalton, PE, CAE

Effective July 2013, Marla Dalton was named Executive Director of the National Foundation for Infectious Diseases (NFID), a non-profit 501 (c)(3) organization dedicated to educating the public and healthcare professionals about the causes, treatment, and prevention of infectious diseases. As chief staff officer, she provides continuing leadership and direction for NFID in furthering its mission and assuring the organization and its programs, products, and services are consistently presented in a strong, positive manner. She joined NFID in 2010 as Senior Director, Education and Public Outreach, responsible for developing and implementing strategies to integrate public and professional education on vaccine-preventable diseases, expanding strategic partnerships and coalitions including more than 50 partner organizations, and managing communications outreach initiatives including website properties.
Prior to joining NFID, she served as Senior Vice President of Education and Consulting Services at the Association for Professionals in Infection Control and Epidemiology, Inc. (APIC) where she was responsible for the development and management of APIC’s educational programs (live and online) and products as well as APIC Consulting Services, Inc., a wholly-owned, for-profit subsidiary. Prior to joining APIC, Marla was Executive Vice President of the American Society of Civil Engineers (ASCE) Industry Leaders Council and Executive Director of The Infrastructure Security Partnership.  Marla is a Certified Association Executive and a registered professional engineer in the Commonwealth of Virginia. She is a member of the American Society of Association Executives.


Dr Thomas File is Chair of the Infectious Disease Division at Summa Health System in Akron, Ohio, USA and Professor of Internal Medicine, Master Teacher, and Chair of the Infectious Disease Section at Northeast Ohio Medical University in Rootstown, Ohio. After graduating from medical school at the University of Michigan, Ann Arbor, in 1972, Dr File received his Master of Science in medical microbiology from Ohio State University in Columbus, in 1977, where he also completed his fellowship in infectious diseases.

Dr File is a Master of the American College of Physicians, a fellow and a past member of the Board of Directors of the Infectious Diseases Society of America (IDSA), and a fellow of the American College of Chest Physicians. He is President of the Board of Directors of the National Foundation for Infectious Diseases and is a member of many other professional societies, including the American Society for Microbiology, the American Thoracic Society (ATS) and the European Society of Clinical Microbiology and Infectious Diseases. He is a previous Chairperson of the Standards and Practice Guidelines Committee of the IDSA and has also served as a member of the IDSA and ATS committees for guidelines on community-acquired pneumonia; and is a member of the IDSA guidelines panels for hospital-acquired pneumonia, influenza and sinusitis. He is a past-president of the Infectious Disease Society of Ohio, and of the Northeastern Ohio Task Force on AIDS.

Primary research interests that Dr File has pursued include community-acquired respiratory tract infections, immunizations in adults, bacterial resistance in respiratory infections, infections in patients with diabetes, soft tissue infections, and evaluation of new antimicrobial agents. A frequent lecturer both nationally and internationally, Dr File has published more than 250 articles, abstracts and textbook chapters, focusing on the diagnosis, etiology and treatment of infectious diseases, and in particular, respiratory tract infections. He co-authored File TM Jr. and Stevens DL Contemporary Diagnosis and Management of Skin and Soft Tissue Infections,3rd Ed (2011, published by Handbooks in Health Care Co.) and co-edited Tan JS, File TM Jr., Salata RA, Tan MJ (eds.) Expert Guide to Infectious Diseases, 2nd edition (2008, published by ACP Press, Phil.). In addition, he is Editor-in-Chief of Infectious Diseases in Clinical Practice.

Elizabeth D. Hermsen, Pharm.D., M.B.A., BCPS-ID

HermsenDr. Hermsen is a Clinical Outcomes Research Director at Cubist Pharmaceuticals, Inc. She is also an Adjunct Associate Professor at the University of Nebraska Medical Center, College of Pharmacy, in Omaha, Nebraska.

Dr. Hermsen received her Doctor of Pharmacy degree from the University of Nebraska Medical Center. She proceeded to pursue post-doctoral training, including a pharmacy practice residency at The Nebraska Medical Center, a fellowship in Infectious Diseases Research at the University of Minnesota College of Pharmacy, and a masters in business administration with emphasis on marketing and healthcare industry from the University of Minnesota Carlson School of Management. Following her fellowship, she developed and co-directed the antimicrobial stewardship program at The Nebraska Medical Center before joining the Cubist team as the Clinical Scientific Director for the Midwest until recently accepting her new position with Cubist.

Dr. Hermsen is a Board Certified Pharmacotherapy Specialist with added qualifications in Infectious Diseases. She has contributed to the profession with numerous publications in peer-reviewed journals, book contributions, and by serving as a reviewer for several professional journals. Dr. Hermsen has also given a number of presentations at state, regional, national, and international meetings.

Dr. Hermsen recently completed her term as Past-President of the Society for Infectious Disease Pharmacists and holds memberships in the American College of Clinical Pharmacy, the Infectious Disease Society of America, the Society for Healthcare Epidemiology of America, the American Society of Microbiology, and the Industry Pharmacists Organization.