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Table 1 Features of the Lake Kariba HFCAs chosen as model systems for three archetypical settings of malaria transmission

From: Effectiveness of reactive case detection for malaria elimination in three archetypical transmission settings: a modelling study

 

Bbondo HFCA

Luumbo HFCA

Munyumbwe HFCA

Number of households

745

744

3152

Population

8000

12,000

25,000

Approximate total area (km2)

118

461

340

Occupancy area

0.18

0.38

0.16

RDT+ prevalence in June 2012

9%

42%

28%

  1. Total area of each HFCA was approximated by a concave hull with α = 0.1 around household locations. Occupancy area, a measure of household clustering, was calculated by drawing a circle of 200 m around each household, calculating the total area covered by at least one circle, and normalizing by the maximum occupancy area achieved if no circles overlap. The 200 m buffer was chosen to reflect a realistic daily mosquito flight distance. Lower occupancy area indicates more clustered households