Dr. Halsey is a pediatrician with subspecialty training in infectious diseases and epidemiology. He has published more than 200 scientific articles in peer-reviewed journals on the subject of vaccines and vaccine safety and conducted or participated in epidemiological studies of vaccines against diseases including hepatitis A, hepatitis B, poliomyelitis, pertussis, Haemophilus influenzae type B, tetanus, Lyme disease, rotavirus, Argentina Hemorrhagic Fever, human papillomavirus (HPV) and influenza.

He has contributed information to the Institute of Medicine and the Public Health Service for reviews of individual vaccine safety issues, provided expert testimony and reviews of legal claims involving the National Vaccine Injury Compensation Program, vaccine manufacturers, and the Food and Drug Administration.

Dr. Halsey has served on advisory groups for the World Health Organization, CDC, and the American Academy of Pediatrics and he participated in the development of more than 90 guidelines for the use of vaccines.

Lawrence H. Moulton, PhD

CO-DIRECTOR

Dr. Moulton is a biostatistician who focuses on issues of vaccine safety and effectiveness. He has made applied and theoretical contributions to the design and analysis of Phase II, III, and IV vaccine investigations. Dr. Moulton's areas of expertise include statistical epidemiology and cluster randomized trials.

He has served as a consultant to the FDA, CDC, PAHO, and WHO on issues of vaccine evaluation, and has received substantial National Institutes of Health funding for statistical research on vaccine evaluation. He has been the principal statistician on many large vaccine, HIV, and nutritional intervention trials. Dr. Moulton is a professor in the Department of International Health with a joint appointment in the Department of Biostatistics at Johns Hopkins, where he directs the Ph.D. program in Global Disease Epidemiology and Control and the Peace Corps Masters International program. 

 updated March 2010

Daniel A. Salmon, PhD

DEPUTY DIRECTOR

Dr. Salmon's training, research and practice interests are in epidemiology and health policy.  He has focused on post-licensure vaccine safety and the factors associated with parental decisions to vaccinate, or not vaccinate, their children. Dr. Salmon served as the Director of Vaccine Safety at the National Vaccine Program Office, where he was responsible for coordinating federal vaccine safety activities.  Dr. Salmon has conducted a broad range of studies examining the safety of vaccines, the rates of vaccine refusal, the reasons why parents refuse vaccines, the impact of health care providers and local and state policies on vaccine refusal and the individual and community risks of unvaccinated children. Dr. Salmon is widely published in the medical literature.  

 updated Sept 2012