Abstract
In sub-Saharan Africa (SSA), onchocerciasis control has been implemented for many decades, beginning in 1974 under the Onchocerciasis Control Programme in West Africa (OCP) and in 1995 in Central and East Africa (plus Liberia) under the African Programme for Onchocerciasis Control (APOC). Since the establishment of the Expanded Special Project for Elimination of Neglected Tropical Diseases (ESPEN) in 2016, data on mass drug administration (MDA) with ivermectin has been centrally compiled for all endemic countries at implementation unit (IU) level, beginning in 2013. This paper presents HISTONCHO, a dataset collating detailed information on interventions, including vector control, from 1975 through to 2022, using the ESPEN portal (2013–2022), regional and country reports, implementation partners’ records, and published literature. Reconstructing such intervention histories is crucial for an understanding of their evolution, modelling their impact, and tailoring future interventions. We discuss strengths and limitations associated with the ESPEN database, and how HISTONCHO can be improved to support modelling of intervention strategies as well as onchocerciasis control and elimination efforts by endemic country programmes.
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Data availability
The HISTONCHO dataset is openly accessible as RDS and CSV files at the following Zenodo link: https://zenodo.org/records/15390119.
Code availability
The code used to reconstruct the intervention histories, using the data sources described throughout the Methods section, is available at the following GitHub link: https://github.com/mrc-ide/HISTONCHO. Updates to the HISTONCHO dataset are encouraged through pull requests. Worked examples are provided through an R Notebook, available on the GitHub repository.
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Acknowledgements
This work was supported by the Bill & Melinda Gates Foundation (now Gates Foundation) through the NTD Modelling Consortium (INV-030046). M.A.D. and M.-G.B. acknowledge funding from the MRC Centre for Global Infectious Disease Analysis (MR/X020258/1), funded by the UK Medical Research Council (MRC). This UK-funded award is carried out in the frame of the Global Health EDCTP3 Joint Undertaking. We wish to thank Dr Renata Retkute for her assistance in identifying annual and biannual treatment frequencies in Ethiopia, and Dr Mutono Nyamai for her help in identifying foci across sub-Saharan Africa for which elimination of onchocerciasis transmission has been reported.
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Conceptualisation: M.A.D., M.W. and M.-G.B. Data curation: M.A.D. Formal analysis: M.A.D., M.W. and A.R. Funding acquisition: M.W. and M.-G.B. Investigation: M.A.D., J.E.C., C.F. and M.-G.B. Methodology: M.A.D., M.W. and M.-G.B. Resources: J.E.C., E.G., G.S.N., A.T., E.M., A.M.A.A., J.C., P.B., R.B., W.A.S. and M.-G.B. Software: M.A.D. and A.R. Supervision: M.W. and M.-G.B. Validation: M.A.D., M.W., A.R. W.A.S. and M.-G.B. Visualisation: M.A.D. Writing – original draft: M.A.D., M.W. and M.-G.B. Writing – review & editing: M.A.D., M.W., A.R., J.E.C., E.G., G.S.N., A.T., E.M., A.M.A.A., J.C., P.B., C.F., R.B., W.A.S. and M.-G.B.
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Dixon, M.A., Walker, M., Ramani, A. et al. HISTONCHO: A dataset of intervention histories for onchocerciasis control & elimination in sub-Saharan Africa. Sci Data (2026). https://doi.org/10.1038/s41597-026-06852-w
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DOI: https://doi.org/10.1038/s41597-026-06852-w


