Skip to main content

Table 1 Comparison of planning processes for IRS pre- and post-targeted approach

From: Targeting indoor residual spraying for malaria using epidemiological data: a case study of the Zambia experience

 

Prior to targeted approach

Targeted approach

IRS commodity planning

Commodities needed are estimated by multiplying the number of houses sprayed the previous year by an estimate of population growth

Commodities needed are calculated based on households mapped and targeted

IRS identification of structures

One month spent conducting a ground based census; stickers on doors identify households for spraying

One week spent enumerating structures from freely available satellite imagery through a desktop exercise

IRS targeting

Clusters of households identified for spraying based on geographic proximity to district health facilities and roads, and risk according to local knowledge

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

IRS planning

Largely based on accessibility for spray teams and local knowledge/perception of malaria burden

Based on malaria incidence reported to health centers and population density, then subjected to local review

IRS implementation

Paper-based data recording

Mapped houses guide implementation. During IRS, all geographic positioning system (GPS) coordinates recorded in real-time allowing for ‘mop up’ of missed households

IRS surveillance

Malaria indicator survey (MIS) provides data on whether houses were sprayed. This survey occurs once every 3 years

All GPS coordinates for sprayed and unsprayed houses recorded for analysis