Our People

William Moss, MD, MPH

Interim Executive Director

Executive Director Dr. Moss is the co-Principal Investigator of the Strengthening Immunization Systems through Serosurveillance (SISS) project funded by the Bill & Melinda Gates Foundation to assess the feasibility and utility of serological surveillance to guide immunization programs.

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Naor Bar-Zeev, PhD, MPH

Deputy Director, Director of Epidemiology

Associate Professor Dr. Naor Bar-Zeev is an Australian-trained clinical academic with 20 years of experience in global child health across East Asia, the Pacific, and Africa.

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Maria Deloria Knoll, PhD

Associate Director for Science

Dr. Knoll is an epidemiologist with a focus on the technical analytical challenges for policy-driven research pertaining to the design, conduct, and analysis of epidemiological studies and clinical trials that evaluate vaccines and vaccine-preventable diseases.

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Lois Privor-Dumm, IMBA

Director of Policy, Advocacy & Communications

Ms. Privor-Dumm leads Policy, Advocacy, and Communications efforts on a variety of projects at country, regional, and global level, including advocacy and capacity building in low- and middle- income countries.

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Patricia Hahn-Esposito

Director of Operations

Ms. Hahn-Esposito is the financial manager that oversees financial & administrative management of IVAC projects and personnel.

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Mathuram Santosham, MD, MPH

Senior Advisor

Dr. Santosham is the senior advisor at IVAC and helps to formulate and guide IVAC’s strategies and mission.

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