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Our Team

The Mérieux Foundation USA is guided by a team of experts in science, public health and business.

The Mérieux Foundation USA Executive Board members are influential figures in public health, health research, philanthropy and business. The staff includes experts with extensive experience in government, international policy and disease surveillance.

Board of Directors

  • Chair David Heymann, M.D., London School of Hygiene and Tropical Medicine

    Chair David Heymann, M.D., Public Health EnglandDavid Heymann is currently Professor of Infectious Disease Epidemiology, London School of Hygiene and Tropical Medicine and Head of the Centre on Global Health Security at Chatham House, London. Up to March 2017, Dr Heymann was Chairman of the Board, Public Health England, UK. Previously to this he was the World Health Organization’s Assistant Director-General for Health Security and Environment and the representative of the Director-General for polio eradication. From 1998-2003 he was Executive Director of the WHO Communicable Diseases Cluster during which time he headed the global response to SARS, and from October 1995 to July 1998 he was Director of the WHO Programme on Emerging and other Communicable Diseases. Prior to that Dr Heymann was the Chief of research activities in the WHO Global Programme on AIDS.

    Before joining WHO, Dr Heymann worked for 13 years as a medical epidemiologist in sub-Saharan Africa on assignment from the US Centers for Disease Control and Prevention (CDC). In this capacity he was part of the team that responded to the first and second outbreaks of Ebola Hemorrhagic Fever and supported ministries of health in designing and implementing programmes in infectious disease prevention and control, with emphasis on field research on childhood diseases, malaria and the African haemorrhagic fevers.

    He is a member of the Institute of Medicine of the National Academies (United States) and Fellow of the Academy of Medical Sciences (UK); he has been awarded the 2004 Award for Excellence of American Public Health Association; the 2005 Donald Mackay Award from the American Society for Tropical Medicine and Hygiene, and the 2007 Heinz Award on the Human Condition. In 2009 he was appointed an honorary Commander of the Most Excellent Order of the British Empire (CBE) for service to global public health.

  • Jon Kim Andrus, M.D., University of Colorado’s Center for Global Health

    Jon Kim Andrus, M.D., University of Colorado’s Center for Global HealthDr. Andrus is Adjoint Professor and Director of the Division of Vaccines and Immunization of the University of Colorado’s Center for Global Health. Dr. Andrus leads efforts to advocate for the evidence-based use of vaccines in developing countries. Over his 30-year global health career Dr. Andrus has served as Deputy Director of the Pan American Health Organization (PAHO); Lead Senior Technical Advisor for PAHO’s immunization program providing oversight for PAHO’s measles-rubella elimination and other immunization initiatives; and the Regional Advisor for polio eradication in WHO’s Southeast Asia Region from 1993-2000. He has also held positions as Head of the Vaccinology and Immunization Program at the Institute for Global Health at the Universities of California at San Francisco and Berkeley; and Professor and Director of the Global Health MPH Program at George Washington University.

    Dr. Andrus holds faculty appointments at the University of California, San Francisco, and the Johns Hopkins University Bloomberg School of Public Health. He began his global health career as a Peace Corps volunteer, serving as the District Medical Officer in Mchinji, Malawi. Currently, Dr. Andrus serves on several global health advisory groups, including: co-Chair of the Global Polio Partners Group, member of the International Monitoring Board for the Polio Transition, member of PAHO’s Technical Advisory Group for Vaccine Preventable Diseases, member of WHO’s South East Asia’s Regional Verification Commission for Measles and Rubella Elimination, and member of the WHO’s Strategic Advisory Group of Experts Working Group on the Decade of Vaccines. Dr. Andrus has published more than 120 scientific peer-reviewed papers. He has received numerous awards for his leadership in the eradication of polio, measles, rubella and congenital rubella syndrome, as well as for the introduction of new vaccines in developing countries.

  • Didier Cherpitel, Mérieux Foundation Board member

    Didier Cherpitel, Mérieux Foundation Board memberMr. Cherpitel has an extensive background in banking, humanitarian organisations and corporate business. A graduate of the Institut des sciences politiques in Paris, Mr. Cherpitel did his national service in Abidjan, Ivory Coast, where he did voluntary work in 1969 and 1970. From 1970 to 1998, he worked as a commercial, private and merchant banker for JP Morgan in New York, Singapore, Brussels, Paris and London. He oversaw JP Morgan in France from 1988 to 1996. Mr. Cherpitel was elected Secretary General of the Federation of National Red Cross and Red Crescent Societies in Geneva, a post he held from 1999 to 2003. From 2004 to 2008, Mr. Cherpitel was the Chairman of ATOS ORIGIN, the second largest European IT company, listed in Paris. He is the director of several listed companies and serves on the Boards of numerous foundations and NGOs in Switzerland, France, Great Britain and the Benelux countries. Mr. Cherpitel serves on the Board of directors of the Mérieux Foundation as Treasurer since 2005 and founded Managers Without Borders in partnership with Université Laval in Quebec in 2005.

  • Kevin De Cock, M.D., F.R.C.P., Centers for Disease Control and Prevention

    Kevin De Cock, M.D., F.R.C.P., Centers for Disease Control and PreventionDr. De Cock is currently the Director of the U.S. Centers for Disease Control and Prevention’s Kenya office and the Director of the CDC’s Division of Global HIV/AIDS Kenya program supporting the President’s Emergency Plan for AIDS Relief. Dr. De Cock previously served as the Director of the CDC Center for Global Health. Throughout his career he has served in a variety of positions and medical schools in the United Kingdom, the United States, and sub-Saharan Africa. From 2006–2009 he served as Director of the World Health Organization Department of HIV/AIDS. He also previously served as Director of the CDC Division of HIV/AIDS Prevention, Surveillance, and Epidemiology.

    Dr. De Cock received his medical degree in 1974 from the University of Bristol, United Kingdom. He specialized in internal medicine and obtained extensive experience in infectious diseases, tropical medicine, and liver disease. He is a Fellow of the Royal College of Physicians (United Kingdom) and Visiting Professor of Medicine and International Health at the London School of Hygiene and Tropical Medicine. Dr. De Cock has received a number of awards including the Chalmers Medal, Royal Society of Tropical Medicine and Hygiene; Commandeur de l’Ordre de la Santé Publique (Commander of the Order of Public Health), Côte d’Ivoire; the CDC and ATSDR honor Award for International Health; the CDC Mackel Award; and the CDC William C. Watson Jr. Medal of Excellence. He has published over 300 articles and book chapters and has served as a referee for numerous scientific journals and organizations.

  • Warren Johnson, M.D., Weill Cornell Medical College

    Dr. Johnson is the B.H. Kean Professor of Tropical Medicine and the Director of the Center for Global Health at the Weill Cornell Medical College. He has devoted his career to research and training in resource-poor countries, with a focus on tropical diseases, tuberculosis, and HIV/AIDS. His research has served as a vehicle for the training of several generations of outstanding investigators, and the development of long-term research and training programs in Brazil (1969), Haiti (1979) and Tanzania (2006). He has received over 4 decades of uninterrupted research and training support from the National Institutes of Health, including an NIH Merit Award. He has served as a mentor for over 60 postdoctoral trainees, including 18 NIH K-award recipients. Dr. Johnson has also served as a Director of the American Board of Internal Medicine, the IDSA Council, and on the Advisory Councils of the NIH and the NIAID.

    In Tanzania, Dr. Johnson directs a multidisciplinary collaboration between Weill Cornell Medical College and the Weill Bugando University College of Health Sciences in Mwanza, Tanzania. This is a bidirectional exchange of over 50 US and Tanzanian faculty and residents between Cornell in New York and Tanzania, in both the basic sciences and clinical departments. In Brazil, he has performed clinical and laboratory studies on leishmaniasis, leptospirosis, schistosomiasis, leprosy, and HIV/AIDS. In addition, over 300 Brazilian investigators and clinicians have received training in Brazil or in the US through this program. He was elected to the Brazilian National Academy of Sciences in 2006. In Haiti, he was a co-founder of the Cornell-GHESKIO Program in 1983. In 2010, GHESKIO received the Gates Foundation Award for Global Health, which carries a $1 million honorarium in recognition of its “major and lasting contributions to the field.”

  • Karine Mehler, Mérieux Foundation Board member and granddaughter of Charles Mérieux

    Karine Mehler, Mérieux Foundation Board member and granddaughter of Charles MérieuxMs. Mehler holds a post-graduate degree in business law and economics from the University of Panthéon-Assas (Paris II) and a qualifying certification for the practice of law. She began her career as a lawyer in Paris, and in 1999, she created an editorial site dedicated to culture and youth. Today she leads a company specialized in personalized accessories.

    Ms. Mehler is the granddaughter of Dr. Charles Mérieux, founder of the Mérieux Foundation. She has sat on the board of directors of the Foundation since 2007 as one of the founders’ representatives, and has been a member of the board of directors of the Mérieux Foundation USA since its creation. At the same time, she is involved in the world of foundations as a member of various associations representing family foundations.

  • Clare O’Brien, Partner, Shearman & Sterling

    Clare O'BrienClare O’Brien regularly advises major U.S. and international clients on their public and private mergers and acquisition transactions, including public company restructurings, joint ventures and large public transactions. She also provides counsel on corporate law questions, including corporate governance matters.

    Ms. O’Brien has been consistently acknowledged as a leading M&A lawyer and has received a “Dealmaker of the Year” award by The American Lawyer.

    Prior to joining Shearman & Sterling, Ms. O’Brien worked with the law firm of Brady & Tarpey, P.C., where her practice included cross-border corporate transactions, litigation and domestic relations. She began her legal career at the Irish law firm of Eugene F. Collins & Son.

Leadership in Washington, D.C.

  • Koren Wolman-Tardy, Chief Executive Officer

    Koren Wolman-Tardy, Chief Executive OfficerKoren Wolman-Tardy is the Chief Executive Officer of the Mérieux Foundation USA since March 1, 2020. Before joining the Mérieux Foundation USA, she was Fondation Mérieux’s Communication Director, since 2013, and a member of the foundation’s Management Committee since 2015. Prior to that, she worked in the healthcare industry, leading external communications at bioMérieux (2005-2012) and media relations at Sanofi Pasteur (2002-2004). She also has experience in communications and development in the non-profit sector and was in charge of development for the Aspen Institute of France (1997-2001). Koren Wolman-Tardy began her career in television, working, among others, as a journalist and producer for the French network, M6, and US network, CBS.

    Of French and American nationalities, she is a graduate of Brown University (Providence, Rhode Island, USA).

  • Barbara Jauregui Wurst, MD MSc, Director of Programs

    Barbara Jauregui Wurst, MD MSc, Director of ProgramsDr. Barbara Jauregui Wurst is Director of Programs of the Mérieux Foundation USA since January 2020. She had been a consultant for the foundation since July 2019 before joining the team.

    An Argentine-American physician with postgraduate studies in Clinical Effectiveness and Quality Improvement of Health Systems, Dr. Jauregui Wurst has 18 years of international experience including public health advisory and management in both government and non-profit organizations. Between 2014 and 2019, she worked for regional and international health organizations, including Pan American Health Organization/World Health Organization (PAHO/WHO), Sabin Vaccine Institute, WHO Geneva, CDISC as a consultant in the development of strategic plans, multi-million grant proposal writing, research studies, scoping reviews, regional training curricula, and technical guidelines, among others. From 2007-2014, she worked as United Nations Technical Officer of the PAHO/WHO, providing advice to Ministries of Health on evidence-based health policy decisions around vaccine-preventable diseases. Prior to joining PAHO, she held a number of research positions in Argentina at organizations including the Argentine Ministry of Foreign Affairs and National Center for Diagnosis and Research on Endemoepidemics. In addition to her role at the Mérieux Foundation USA, Dr. Jauregui Wurst holds an Adjunct / Professorial Lecturer position at the Department of Global Health, George Washington University. She has published dozens of scientific articles in peer-reviewed journals and five book chapters. She has also given panel presentations at over 40 regional and international meetings and led five PAHO/WHO regional workshops.

    Barbara holds a MSc in Healthcare Quality Management from the University of Murcia, Spain, an MSc(c) in Clinical Effectiveness and Health Policy from the University of Buenos Aires, Argentina, and a MD, Doctor of Medicine from the University of Buenos Aires, Argentina.

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