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IRS commodity planning
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Commodities needed are estimated by multiplying the number of houses sprayed the previous year by an estimate of population growth
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Commodities needed are calculated based on households mapped and targeted
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IRS identification of structures
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One month spent conducting a ground based census; stickers on doors identify households for spraying
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One week spent enumerating structures from freely available satellite imagery through a desktop exercise
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IRS targeting
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Clusters of households identified for spraying based on geographic proximity to district health facilities and roads, and risk according to local knowledge
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All households mapped, clusters of 25 or more households created, monthly health facility incidence calculated, clusters selected based on household density and clinical malaria incidence
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IRS planning
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Largely based on accessibility for spray teams and local knowledge/perception of malaria burden
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Based on malaria incidence reported to health centers and population density, then subjected to local review
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IRS implementation
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Paper-based data recording
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Mapped houses guide implementation. During IRS, all geographic positioning system (GPS) coordinates recorded in real-time allowing for ‘mop up’ of missed households
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IRS surveillance
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Malaria indicator survey (MIS) provides data on whether houses were sprayed. This survey occurs once every 3 years
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All GPS coordinates for sprayed and unsprayed houses recorded for analysis
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