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Study area and design. Map of the study site in the Vhembe District, Limpopo Province, South Africa. Bar graphs show the proportion of samples collected from the different source health districts and the years of transmission. The study district shares borders with Zimbabwe, Botswana and Mozambique. South Africa is shown alongside other malaria endemic countries in the E8 region. The “unknown” category represents 45% of the samples that could not be linked to source health districts
