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Core Leadership

Manhattan Charurat
Man E. Charurat, PhD, MHS
Global Director

Pacha Villalba-Diebold, MS
Pacha Villalba-Diebold, MHS
Program Administrator for Southern and East Africa

Joyce Johnson
Joyce Johnson,
Program Administrator for West Africa and PHIA

A headshot of a person who is wearing glasses.
Cathy Mwangi, PhD
International Program Administrator, Operations

Alash’le Abimiku, PhD
Director, Laboratory Services

Stephen Ohakanu
Stephen Ohakanu
Director, Health Informatics

Marie-Claude Lavoie
Marie-Claude Lavoie, PhD, MPH
Director, Strategic Information
and Evaluation

David J. Riedel, MD, MPH
Medical Director

Celestine Buyu
Celestine Buyu, MPH, MHSA
Director, Health Programs: IHV International Clinic

Brenna Roth
Brenna M. Roth, MD, MPH
Senior Technical Advisor, Biosecurity

Chinedu Agbakwuru
Chinedu Agbakwuru, MBBS, MS
Senior Technical Advisor, Population HIV Impact Assessments

Country Leadership

Sylvia Adebayo
Sylvia Adebajo, PhD, MBBS
Nigeria Country Director

Sebeza Jackson
Jackson Sebeza MD
Country Representative

A man wearing a black tuxedo.
Thoko Kalua, MBBS, MSc
Malawi Country Director

Jaintilal DinasDinis Jaintilal, PGDipPH
Mozambique Country Director

Abubakar M. Maghimbi, MD
Abubakar M. Maghimbi, MD
Tanzania Country Director

Lillian Okui
Lillian Aaca Okui, MBChB MPH
Botswana Country Representative

Caroline Ngeno
Caroline Ng'eno, MD
Kenya Country Director

Cassidy Claassen
Cassidy W. Claassen, MD, MPH
Zambia Acting Director



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