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2018 Speaker Biographies

  • Ms. Patricia M. Barrett
    Ms. Barrett is the antimicrobial resistance coordinator for the New Jersey Department of Health (NJDOH). In this role, Patty leads the Candida auris response team in New Jersey and oversees education, investigation and response activities for this drug-resistant yeast, as well as other drug-resistant threats. Previously, Patty worked as an epidemiologist with the Infection Control Assessment and Response (ICAR) Team at NJDOH, which has systematically assessed and promoted infection prevention practices in healthcare facilities across the New Jersey. Their background is in population health and demographic analysis, having earned a Master of Science in Demography from the Center for Demography and Population Health at the Florida State University. 
  • Dr. Vernon M. Chinchilli
    Dr. Chinchilli, PhD, is distinguished professor and chair in the Department of Public Health Sciences at the Penn State College of Medicine. His professional experience includes two years as a post-doctoral fellow in mathematical statistics at the U.S. Food and Drug Administration, 11 years as assistant professor through professor in the Department of Biostatistics at the Medical College of Virginia of Virginia Commonwealth University, and the last 25 years as professor at the Penn State College of Medicine.
  • Ms. Rebecca Greeley
    Ms. Greeley works as an infectious disease epidemiologist with the Communicable Disease Service at the New Jersey Department of Health (NJDOH). Rebecca currently oversees investigations and response for an array of organisms and conditions including hepatitis C, Legionella, Candida auris, multi-drug resistant organisms and hundreds of healthcare-associated outbreaks. Rebecca has been at NJDOH for over 10 years, including a two-year CDC/CSTE applied epidemiology fellowship at NJDOH. She has worked on a variety of outbreaks and investigations including legionellosis in long-term care facilities, hepatitis B in oncology practice, Shigella outbreak in a lake and fungal infections associated with contaminated steroid injections. Rebecca maintains ongoing partnership with public health partners throughout the state including local health departments, regional contacts and acute care hospitals well as various subject matter experts at the Centers for Disease Control and Prevention. Rebecca has a Bachelor of Science in microbiology from Michigan State University and a Master of Science in Public Health in epidemiology from the University of Michigan, School of Public Health.
  • Dr. Ali S. Khan
    Dr. Khan, MD, MPH, is a former assistant surgeon general and current dean of the College of Public Health at the University of Nebraska Medical Center (UNMC).  Dr. Khan's professional career has focused on health security, global health and emerging infectious diseases. He completed a 23-year career as a senior director at Centers for Disease Control and Prevention (CDC), which he joined as a disease detective, and where he led and responded to numerous high profile domestic and international public health emergencies.  Dr. Khan was also one of the main architects of CDC's public health bioterrorism preparedness program. As dean of the UNMC College of Public Health, his focus is on health system and community based health transformations.  His vision is for the college to play an integral role in making Nebraska the healthiest and most equitable state in the union as a national and global model for wellness. Dr. Khan received his medical degree from the State University of New York Downstate Medical Center in Brooklyn and has a Master of Public Health from Emory University's Rollins School of Public Health. He completed his pediatrics and internal medicine training at the University of Michigan. He has authored numerous papers and publications and consulted extensively for multiple U.S. organizations, ministries of health, and the World Health Organization. In 2015 he supported response activities for the West Africa Ebola outbreak in Sierra Leone as a World Health Organization (WHO) consultant.  Dr. Khan is the author of The Next Pandemic: On the Front Lines Against Humankind's Gravest Dangers.
  • Dr. Hannah Lawman
    Dr. Lawman is the director of research and evaluation for Get Healthy Philly, the Division of Chronic Disease Prevention at the Philadelphia Department of Public Health. Her work and the division research and evaluation agenda emphasizes multi-sectoral and population health approaches including changes to the built environment and policy approaches to chronic disease prevention, including nutrition, physical activity, and tobacco control. She received her doctorate in Clinical-Community Psychology from the University of South Carolina and completed a clinical internship and post-doc in Health Psychology at the Center for Obesity Research and Education at Temple University. Prior to joining Get Healthy Philly, she worked for the Centers for Disease Control and Prevention as an epidemiologist with the National Health and Nutrition Examination Survey.
  • Dr. David H. Ledbetter
    Dr. Ledbetter is executive vice president and chief scientific officer at Geisinger. Previously he held academic and leadership positions at Emory University, the University of Chicagovand the National Center for Human Genome Research at NIH. He is a graduate of Tulane University and earned his doctorate. at the University of Texas-Austin.  He is an internationally recognized expert in precision medicine, having focused his early research efforts on discovering the genetic causes of childhood neurodevelopmental disorders such as autism, and the translation of new genomics technologies into clinically useful genetic tests for early diagnosis and intervention. His current research interest includes leveraging longitudinal electronic health information with large-scale DNA sequencing to determine the clinical utility and cost-effectiveness of precision medicine approaches in a real-world health system setting.
  • Dr. Vincent Lo Re
    Dr. Lo Re is associate professor of medicine (infectious diseases) and epidemiology at the University of Pennsylvania, senior scholar in the Penn Center for Clinical Epidemiology and Biostatistics and co-director of the Penn Center for AIDS Research HIV/Viral Hepatitis Scientific Working Group. Dr. Lo Re leads a nationally recognized research program that examines the epidemiology of acute and chronic liver diseases in HIV-infected patients. He has conducted population-based and mechanistic studies that have helped to move the field of chronic viral hepatitis and HIV/viral hepatitis coinfection forward in a unique way. Recent research has evaluated end-stage liver disease and liver cancer events among HIV/hepatitis C-coinfected patients; examined how chronic viral hepatitis and HIV/viral hepatitis coinfection influence extra-hepatic outcomes, particularly metabolic bone disease; determined the impact that medications have on acute liver injury and progression of chronic viral hepatitis; and evaluated adherence and adverse effects of antiviral therapies of chronic hepatitis B and C. He has particular expertise in evaluating liver-related and other health outcomes among viral hepatitis-infected patients within large electronic data sources, such as the Veterans Health Administration, Kaiser Permanente Northern California, U.S. Medicaid, U.S. Medicare and Sentinel. His research has been funded by the National Institute of Allergy and Infectious Diseases, National Institute of Diabetes and Digestive and Kidney Diseases, National Cancer Institute, Agency for Healthcare Research and Quality, Department of Veterans Affairs and the US Food and Drug Administration. Additionally, Dr. Lo Re has been a standing member of FDA's Antiviral Drug (now Anti-Infective) Advisory Committee since 2014 and co-chair of the Liver Core of the Veterans Aging Cohort Study since 2009. He maintains an active clinical practice devoted to the care of patients with chronic viral hepatitis, particularly those coinfected with HIV.
  • Dr. Irving Nachamkin
    Dr. Nachamkin, DrPH, MPH, D (ABMM)  is professor of pathology and laboratory medicine and director of the Division of Laboratory Medicine at the Perelman School of Medicine, Universit y of Pennsylvania in Philadelphia. Dr. Nachamkin received his graduate degrees from the University of North Carolina School of Public Health in Chapel Hill followed by fellowship training in Public Health and Medical Microbiology in the Department of Pathology at the Medical College of Virginia in Richmond, Virginia.  He began his career in 1982 at Penn as an assistant professor and became division director in 2009.  Dr. Nachamkin has a long standing interest in campylobacter and other gastrointestinal infections, has edited three ASM books on Campylobacter, continues to write the chapter on Campylobacter in the Manual of Clinical Microbiology (12th edition in preparation, ASM) and has published over 200 peer review papers and reviews. He is a member of the workgroup on best practices for diagnosis of campylobacter infections organized by the CDC. Dr. Nachamkin is a fellow of the American Academy of Microbiology, Infectious Diseases Society of America, and College of Physicians of Philadelphia. 
  • Mr. Nolan Ritchie
    Mr. Ritchie is currently the executive director of the Senate Transportation Committee for Senator John C. Rafferty, Jr., Majority Chairman.  In this capacity, Nolan supports the legislative priorities of Chairman Rafferty and is responsible for the management of transportation-related legislation and policy in this commonwealth focused on highway safety, transportation funding and modernization of transportation networks, services and products. Prior to moving to the Senate of Pennsylvania, Nolan worked at PennDOT for nearly eight years in different Central Office management capacities including special assistant to the Secretary of Transportation, innovations officer, administrative officer and executive secretary. Nolan received a Master's in Public Administration from Penn State Harrisburg and a Bachelor of Arts in Political Science from Lebanon Valley College.
  • Dr. Dawn K. Smith
    Dr. Smith is the biomedical interventions implementation activity lead in the Epidemiology Branch of the Division of HIV/AIDS Prevention at the U.S. Centers for Disease Control and Prevention (CDC). She conducts activities supporting the implementation of daily, oral, antiretroviral preexposure prophylaxis (PrEP) and other biomedical interventions to reduce rates of new HIV infections in the United States, including the development of PHS clinical practice guidelines for PrEP. She spent four years as the associate director for HIV research at the CDC field station in Botswana where she established clinical trial infrastructure with integrated sociobehavioral research and initiated PrEP trials. Dr. Smith has served on scientific committees and review panels for WHO, UNAIDS, NIAID, NIDA, NIMH, the NIH Office of AIDS Research and the Institute of Medicine. She serves on a CDC IRB and on a DSMB for the Canadian Center for Vaccinology. Dr. Smith received her M.D. from the University of Massachusetts Medical School and then completed a Master of Public Health in public health policy and international health, and a Master of Science in clinical research design and statistical analysis at the University of Michigan. A family physician, Dr. Smith has practiced in varied settings. She maintains a strong research interest in the intersections of health care systems, race/ethnicity, gender, social class, injection drug use and the HIV epidemic.