• Michael B. Bracken

    Susan Dwight Bliss Professor Emeritus and Senior Research Scientist; Co-Director, Yale Center for Perinatal, Pediatric and Environmental Epidemiology

    Research Interests
    Epidemiology; Gynecology; Neurology; Pediatrics; Perinatal Care; Evidence-Based Medicine

    Dr. Michael Bracken is the Susan Dwight Bliss Professor Emeritus of Epidemiology, Senior Research Scientist in Epidemiology, and formerly Professor of Obstetrics and Gynecology, Reproductive Science and Neurology, a former Head of Chronic Disease Epidemiology at Yale University and former Vice Chairman (Deputy Dean) of the Yale School of Public Health where he has studied and taught for the last 50 years. He is a sometime Research Fellow in Green Templeton College, Oxford University. Professor Bracken has published some 400 articles in the scientific literature and has authored three books: Perinatal Epidemiology (1984) and Effective Care of the Newborn Infant (with J.C. Sinclair, 1992) both published by Oxford University Press. In 2006 this last book, which introduced the concepts of meta-analysis into neonatology, was named by the British Medical Journal as one of the most influential books in evidence-based medicine and was instrumental in assisting the foundation of the international Cochrane Collaboration. His new book: Risk, Chance and Causation: Investigating the Origins and Treatment of Disease was published by Yale University Press in 2013. He is the founding (in 1979) Director of the Yale Perinatal Epidemiology Unit and Co-Director of its successor, the Yale Center for Perinatal, Pediatric and Environmental Epidemiology. Professor Bracken has taught courses in evidence-based medicine and health care, pharmaco-epidemiology, perinatal epidemiology and general epidemiology at Yale for many years. He has directed numerous epidemiological investigations, almost all of which were funded (over $50 million in total) by the United States National Institutes of Health (NIH). He has served on numerous study sections and committees of the NIH including the Council of the National Institute of Deafness and Communicative Disorders. He chaired the first Congress of Epidemiology in 2001 and the first international colloquium on genome–wide association studies in 2006. He consults for many international corporations and agencies including the World Health Organization and he has served as the elected President of two major epidemiological organizations: the American College of Epidemiology and the Society for Epidemiologic Research. Professor Bracken is the 2013 recipient of the Lilienfeld Award from the American College of Epidemiology, a 2015 D.Sc honoris causa from the University of Gloucester in the UK, and the 2016 Gordon Lecture award from the National Institutes of Health.

  • Brian Leaderer

    Susan Dwight Bliss Professor of Epidemiology (Environmental Health Sciences) and Professor of Forestry and Environmental Studies; Co-Director, Yale Center for Perinatal, Pediatric and Environmental Epidemiology

    Research Interests
    Air Pollution; Asthma; Environment and Public Health; Environmental Exposure; Environmental Health; Environmental Pollution; Epidemiology; Public Health; Air Pollution, Indoor

    Dr. Brian Leaderer is the Susan Dwight Bliss Professor of Epidemiology in the Department of Environmental Health Sciences at the Yale School of Public Health and he is Professor at the Yale School Forestry and Environmental Studies. He is the Co-Director of the Yale Center of Perinatal, Pediatric & Environmental Epidemiology (the Yale CPPEE, or the "Center"). In his role as the Deputy Dean at the Yale School of Public Health for over 14 years (during which he was also Interim Dean for 2 years), he oversaw Faculty Affairs including the Appointments and Promotion Committee and Faculty Mentoring Program. He has served on several Committees and Review Panels (NRC, EPA, HEI, etc.). 

    Dr. Leaderer's research interests, resulting in over 300 publications, are interdisciplinary in nature with a focus on assessing exposures (measured and modeled in both environmental chamber and field studies) to air contaminants (indoor and outdoor) and assessing the health impact resulting from those exposures in epidemiological studies. Over the past 30 years he has been Principal Investigator on numerous research grants (totalling approximately $40 million). Several of these grants have been large epidemiologic-based grants (R01s) centered on the role of environmental and genetic factors on the respiratory health of children with particular attention to their role in the development of asthma and asthma severity.  He has collaborated with colleagues from several disciplines at the Yale CPPEE for over 30 years on several epidemiologic studies examining the impact of pollutants on perinatal and pediatric outcomes. With funding from the National Institute of Environmental Health Sciences (NIEHS), he investigated the relationship between exposures to indoor levels of nitrogen dioxide, traffic contaminants and the exacerbation of asthma in 1,401 children (in the STAR Study).  The findings of from this study resulted in another ongoing NIH-funded (NIEHS) grant to conduct a double-blind, randomized control, triple cross-over design intervention trial in urban homes of asthmatic children to examine the efficacy of reducing exposure to indoor levels of PM2.5 and NO2 on reducing asthma severity.

Deputy Director

  • Janneane Gent

    Senior Research Scientist in Epidemiology (Environmental Health Sciences); Deputy Director, Yale Center for Perinatal, Pediatric and Environmental Epidemiology

    Research Interests
    Air Pollution; Asthma; Environmental Health; Epidemiology; Otitis Media

    Dr. Gent’s primary research focus is the effects of air pollution on childhood asthma. She has participated as a Co-investigator, as well as PI,on studies specifically focused on exposure to traffic, a major source of air pollution in our region. These studies take advantage of the large data base of ambient air contaminants measured by the Environmental Protection Agency (EPA) at central monitoring sites. Using this information as well as data collected by the research team at the CPPEE inside and outside of study subjects’ homes, Dr. Gent and her colleagues hope to contribute to the understanding of public health effects of short-term exposure to traffic-related air pollution.

    Dr. Gent has served as a consultant for the EPA reviewing literature on the effects of nitrogen dioxide and particles on health. Her work for the EPA contributes to the production of their Integrated Science Assessments for these pollutants. This in turn is an important step in the regulatory process that leads to the setting of the National Air Quality Standards.

    Dr. Gent is a Research Scientist and Associate Director for Data Management and Analysis at the Yale Center for Perinatal, Pediatric and Environmental Epidemiology.

Research Faculty

  • Nicole Deziel

    Assistant Professor of Epidemiology (Environmental Health Sciences), Assistant Professor in Forestry and Environmental Studies and in Chemical and Environmental Engineering

  • Nicola Hawley

    Assistant Professor of Epidemiology (Chronic Diseases)

    Research Interests
    Diabetes Mellitus; Maternal Health Services; Maternal-Child Health Centers; Obesity; Pregnancy; Prenatal Care; Global Health; Samoa; American Samoa
  • Theodore Holford

    Susan Dwight Bliss Professor of Biostatistics and Professor of Statistics and Data Science

    Research Interests
    Asthma; Lung Neoplasms; Public Health; Global Health; Statistics; Geographic Information Systems
  • Jessica Illuzzi

    Professor; Section Chief, Laborists and Midwifery; Medical Director, Obstetrics, Vidone Birthing Center, St. Raphael Campus, YNHH; Director of Medical Studies, Obstetrics and Gynecology; Director of Electives, Yale School of Medicine

    Research Interests
    Cesarean Section; Education, Medical; Midwifery; Obstetrics; Streptococcus agalactiae; Analgesia, Epidural; Vaginal Birth after Cesarean
  • Zeyan Liew

    Assistant Professor of Epidemiology (Environmental Health)

    Research Interests
    Acetaminophen; Attention Deficit Disorder with Hyperactivity; Child Development; Environmental Pollutants; Models, Statistical; Causality; Pharmacoepidemiology; Endocrine Disruptors; Pediatric Obesity; Autism Spectrum Disorder
  • Alysa Pomer

    Associate Research Scientist in Epidemiology (Chronic Diseases)

    Research Interests
    Disasters; Menarche; Vanuatu; Obesity; Rural Health; Global Health; Samoa; Reproductive Health
  • Yawei Zhang

    Section Chief and Associate Professor Tenure; Co-Assistant Director of Global Oncology, Yale Cancer Center; Chief, Section of Surgical Outcomes and Epidemiology, Department of Surgery

    Research Interests
    Air Pollution; Epidemiology; Lymphoma, Non-Hodgkin; Neoplasms; Pregnancy; Thyroid Neoplasms; Survivors; Genomics; Biostatistics