Invitados internacionales/ Guests

Patrick Breysse, PhD, CIH.


Joined CDC in December 2014 as the Director of NCEH/ATSDR. Dr. Breysse leads CDC’s efforts to investigate the relationship between environmental factors and health. He came to CDC from the Johns Hopkins University where he served as Associate Chair for Educational Programs within the Department of Environmental Health Sciences, Program Director for the Industrial Hygiene Training Program, and co-director of the Johns Hopkins Center for Childhood Asthma in the Urban Environment.

During his 30 years at Johns Hopkins, Dr. Breysse established a long-standing expertise in environmental health as well as a strong record as a leader in the field. He has published over 242 peer-reviewed journal articles and has presented at more than 25 scientific meetings in just the past 5 years. His research has focused on the evaluation and control of chemical, biological, and physical factors that can affect health, with a particular concentration on risk and exposure assessment.

Dr. Breysse received his PhD in Environmental Health Engineering from Johns Hopkins University in 1985 and completed postdoctoral training at the British Institute for Occupational Medicine in Edinburgh, Scotland. He is also a board certified Industrial Hygienist and an editorial review board member for the Journal of Exposure Science and Environmental Epidemiology.

Jack de Bruijn

Director of Risk Management, European Chemicals Agency

Jack de Bruijn is the Director of Risk Management, European Chemicals Agency. He started working at the European Chemicals Agency (ECHA) in September 2007, shortly after its launch. He is currently heading the Risk Management Directorate, responsible for identifying and implementing the authorisation and restrictions processes under REACH, as well as managing the classification-related tasks resulting from the Classification, Labelling and Packaging (CLP) Regulation.

Before joining the ECHA, Mr de Bruijn worked at the European Chemicals Bureau (ECB) of the EU’s Joint Research Centre (JRC) in Ispra, Italy, where he coordinated the development of the guidance documents for REACH. Before joining the ECB he worked for many years for the Dutch national authorities in the area of regulatory risk assessment of chemicals. He is a chemist by training and has a PhD in environmental toxicology.



Dr. Antonia Calafat is the Chief of the Organic Analytical Toxicology Branch, Division of Laboratory Sciences, National Center for Environmental Health, U.S. Centers for Disease Control and Prevention (CDC) in Atlanta, Georgia. She leads CDC's biomonitoring programs for assessing human exposure to pesticides; flame retardants; polycyclic aromatic hydrocarbons; chemicals added to consumer and personal-care products such as phthalates and phenols; and persistent organic pollutants including polybrominated diphenyl ethers; polychlorinated dibenzo-p-dioxins, furans, and biphenyls; and per- and polyfluoroalkyl substances (PFAS).

She has developed and maintained extensive collaborative research with leading scientists in the fields of exposure science, epidemiology, toxicology and health assessment, and has published over 460 peer-reviewed articles. Her research has made important contributions to biomonitoring science, including CDC's National Reports on Human Exposure to Environmental Chemicals.

Throughout her career, Dr. Calafat has served on numerous advisory committees and scientific panels. She was the vice-chairperson at the 2010 FAO/WHO Expert Meeting to assess the safety of bisphenol A. She serves as co-chair of the U.S. Association of Public Health Laboratories’ National Biomonitoring Network Steering Committee to establish a national network of public health laboratories for state-based environmental health surveillance. She also serves on the Advisory Board of the Human Biomonitoring for the European Union (HBM4EU, a joint effort of 28 countries, the European Environment Agency, and the European Commission). Since 2017, she is the co-Editor-in-Chief of the International Journal of Hygiene and Environmental Health.

Dr. Calafat earned her PhD in Chemistry in 1989 from the University of the Balearic Islands, Spain. She was a Fulbright Scholar at the Department of Chemistry of Emory University where she completed her postdoctoral training. She joined CDC in 1996.

Bob Diderich


Bob Diderich, Head of Division, Environment Directorate, Organization for Economic Cooperation and Development Bob Diderich has been involved in environmental hazard and risk assessment of chemical substances since 1992, when he joined the German Federal Environmental Agency. He was working in France between 1995 and 2002, first for the French Ministry of the Environment and then the French National Institute for Industrial Environment and Risks, where he was assessing the environmental risks of industrial chemicals and biocides. In 2002 he joined the Organization for Economic Co-operation and Development where he was in charge of the OECD Cooperative Chemicals Assessment Programme and the OECD Project on (Quantitative) Structure Activity Relationships. Since 2012 he is the head of the Environment, Health and Safety Division.

Alexandra Dapolito Dunn, ESQ


Alexandra Dapolito Dunn is the Assistant Administrator for the Office of Chemical Safety and Pollution Prevention, effective January 2019. Prior to that she served as the Regional Administrator for EPA Region 1, and her responsibilities included overseeing the states of Connecticut, Maine, Massachusetts, New Hampshire, Rhode Island, Vermont and ten tribal nations.

Before joining EPA Region 1 in January 2018, Ms. Dunn served through that time as executive director and general counsel for the Environmental Council of States (ECOS), a national nonprofit, nonpartisan organization committed to helping state agencies improve environmental outcomes for all Americans. From 2014 to early 2018, Ms. Dunn helped state governments improve water infrastructure, air pollution control, site cleanup, chemical management, and economic development. Prior to joining ECOS, Ms. Dunn was executive director and general counsel for the Association of Clean Water Administrators.

Ms. Dunn has been published in the areas of the ethics of community advocacy, environmental justice, urban sustainability, water quality, cooperative federalism, and the Clean Water Act. She has taught on the subjects of environmental justice, and human rights and the environment as dean of Environmental Law Programs at the Elisabeth Haub School of Law at Pace University. She has also taught at the Columbus School of Law, Catholic University of America, where she served as faculty adviser to the student Environmental Law Society. Ms. Dunn most recently taught environmental justice as an Adjunct Associate Professor of Law at the American University's Washington College of Law.

In 2015, Ms. Dunn was elected to the American College of Environmental Lawyers and served in leadership roles through the end of 2017. She also served through the end of 2017 on the executive committee and board of directors of the Environmental Law Institute. She has chaired the American Bar Association's (ABA) section of Environment, Energy, and Resources, its World Justice Task Force, and served on the ABA Presidential Force on Sustainable Development.

Ms. Dunn received a B.A. in political science and French from James Madison University followed by a J.D. from the Columbus School of Law, where she was elected editor-in-chief of the law review. She is a member of the bar in D.C., Maryland, and New York, and the U.S. Supreme Court.

Marcelo Korc, PhD.


Dr. Korc is the Unit Chief, Climate Change and Environmental Determinants of Health at Pan American Health Organization, the regional office of the World Health Organization. He has been a regional advisor with PAHO/WHO since 1998. Currently, he has the responsibility of developing the regional cooperation program on environmental determinants of health, climate change for the Region of the Americas. Prior, Dr. Korc provided policy and technical advice to senior government officials on health and human security, environmental health, social health determinants, violence prevention, and healthy settings in the U.S.-Mexico border region, Colombia, Peru, and Venezuela.

Dr. Korc received a B.Sc. in Chemical Engineering (Cum Laude) from the Technion-Israel Institute of Technology in 1987, a Ph.D. in Chemical Engineering from the University of Rochester in New York in 1992, and a master’s in public health from the University of Texas in 2011. He was an American Association for the Advancement of Science Fellow in 1994 and received the Sandy Tyler Endowed Fellowship‏ in Health Sciences in 2011.

Joel Schwartz


Dr. Joel Schwartz is a Professor in the Departments of Epidemiology and Environmental Health at the Harvard School of Public Health, and in the Department of Medicine at Harvard Medical School. He is also a faculty member in the Environmental Biostatistics Program at the School of Public Health. Dr. Schwartz received his B.A. (1969) and Ph.D. (1980) from Brandeis University.

He is a member of the International Society for Environmental Epidemiology, and the American Thoracic Society. Dr. Schwartz served as a member of the Center for Disease Control’s Committee on Preventing Childhood Lead Poisoning from 1994 to 2002, and as a member of two National Research Council Committees (Committee on Assessing Lead Exposure in Critical Populations, Committee on Environmental Epidemiology).

Dr. Schwartz was a recipient of a John D. and Catherine T. MacArthur Fellowship, and a World Congress Award from the International Union of Environmental Protection Associations. His expertise is in epidemiology, biostatistics, and cost benefit analysis. Dr. Schwartz’s major subject matters include air pollution and lead. His research has involved cross-sectional, time-series, cohort and panel studies of the acute and chronic health effects of air pollution, including both respiratory and cardiovascular endpoints, and he has a particular interest in questions of susceptibility.

In the last two years, Dr. Schwartz received funding from the National Institutes for Health (NIH) for environmental biostatistics, for studies of aeroallergen exposure and asthma, for studies of lead, for a study of the association between particulate air pollution and heart attacks, and for a study of socioeconomic gradients in breast cancer. He has received funding from EPA as the PI for Epidemiology of the Harvard PM Research Center, and from the Health Effects Institute (HEI) for the APHENA project, which aims to combine North American and European time series analyses of air pollution, morbidity, and mortality.