Executive director


David Wilson

David P. Wilson, Ph.D.

Professor David Wilson leads the Optima team. He completed a Ph.D. on infectious disease modeling in 2003, before moving to a postdoctoral fellowship at UCLA on optimizing HIV antiretroviral drugs in Africa. He then worked for 10 years at UNSW where he coordinated Australia’s national HIV surveillance and reporting and was Head of the Disease Modelling and Financing Program at the Kirby Institute. David is currently Head of Infectious Disease Modelling at the Burnet Institute and an NHMRC Senior Research Fellow.




Team leaders


Cliff Kerr

Cliff C. Kerr, Ph.D.

Cliff studied physics at the University of Sydney, with a focus on modeling and computational methods. He currently develops the software to support the group's modeling efforts, leads Optima training workshops, and supports country missions. He was a postdoctoral fellow in neuroscience at the State University of New York.


Robyn Stuart

Robyn M. Stuart, Ph.D.

Robyn studied economics at the University of Sydney before completing a PhD in mathematics at UNSW, focusing on nonlinear dynamical systems. She works on algorithm development, user interface design, and the implementation of health economic analyses. She also leads Optima training sessions and country missions.


Sarah arvis

Sarah Jarvis, Ph.D.

Sarah leads the group's TB modeling work.


Nick Scott

Nick Scott, Ph.D.

Nick leads the group’s modeling work in HCV, malaria and nutrition.




Applications team


Sherrie Kelly

Sherrie Kelly, M.Sc.

Sherrie is the lead of Optima's global HIV modeling project. She has a background in infectious disease epidemiology and is currently involved in developing a regional and global HIV model, as well as working with partners and country stakeholders on HIV and TB modeling applications.


Janka Petravic

Janka Petravic, Ph.D.

Janka holds a Ph.D. in physics, and has extensive background in materials chemistry and mathematical chemistry, as well as in HIV modeling. She primarily works on nutrition.


Azfar Hussain

Azfar Hussain, B.Sc.

Azfar studied at the University of Sydney. He primarily works on country applications.


Rowan Martin-Hughes

Rowan Martin-Hughes, Ph.D.

Rowan works on both model development and applications across all disease areas.


Ines Yap

Ines Yap

Ines supports applications across all disease areas.


Sam Hainsworth

Sam Hainsworth

Sam works on applications and development of the group's HCV model.




Development team


David Kedziora

David Kedziora, Ph.D.

David received his Ph.D. in physics from the Australian National University. He works on algorithm development.


Ruth Pearson

Ruth Pearson, Ph.D.

Ruth works on the development and application of Optima Nutrition.


George Chadderdon

George Chadderdon, Ph.D.

George works on development for Optima HIV.




Applications partners

University College London

Jolene Skordis-Worrall, Jasmina Panovska-Griffiths, Hassan Haghparast-Bidgoli, Laura Grobicki, Timothy Colburn, Sung Wook Kim, Lu Gram

University of Bern

Olivia Keiser, Janne Estill, Zofia Baranczuk, Cindy Zahnd, Luisa Salazar




Former Optima team members

Richard Gray, Andrew Shattock, Iyanoosh Reporter, Madhura Killedar, Romesh Abeysuriya, Alex Hoare, Kel Heymer, Karen Schneider, Eric Chow, Lei Zhang, Amy Kwon, Dam Anh Tran, Braedon Donald, Karina Razali, Stephen Anthony, Quang Pham, Charisse Farr, Matthew O'Dwyer, Andrew Craig, Hugo Bowne-Anderson




World Bank contributors to Optima

Several people have contributed to the development of Optima in different capacities. As a partner in customizing Optima and its use at country level, the following World Bank team members have made valuable contributions: Marelize Görgens, Emiko Masaki, Nicole Fraser-Hurt, Clemens Benedikt, Alona Goroshko, Zara Shubber, Fernando Lavadenz, Carla Pantanali, Markus Haacker, Theo Hawkins, Wendy Heard, Diego Cuadros and David Wilson.

Copyright © 2017 by the Optima team. Terms and Conditions