About the Authors

Helen Bygrave, Judith Mtangirwa, Nathan Ford
Southern Africa Medical Unit, Médecins Sans Frontières, Cape Town, South Africa

Kwenzakwenkosi Ncube
Ministry of Health and Child Welfare Zimbabwe, Buhera District, Zimbabwe

Nathan Ford
Centre for Infectious Disease Epidemiology and Research, University of Cape Town, Cape Town, South Africa

Katharina Kranzer
Clinical Research Unit, London School of Hygiene and Tropical Medicine, London, United Kingdom

Dhodho Munyaradzi
Medical Unit, Médecins Sans Frontières, Harare, Zimbabwe

Corresponding Author

Helen.bygrave@joburg.msf.org

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: HB DM. Performed the statistical analysis: KK HB. Prepared the first draft of the manuscript: HB. Provided critical input to subsequent drafts of the manuscript: HB JM KN NF KK DM. Approved the final version of the manuscript: HB JM KN NF KK DM.