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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