Figure 3
From: Measuring malaria by passive case detection: a new perspective based on Zambian experience
Seasonal changes of the case incidence rate of malaria from each of the 13 rural health centres in the study area. (A) shows mean weekly incidence rates for all RHC weeks 40–46 and (B) weeks 47–52 in 2008. (C) Represents weekly incidence rates during weeks 1–6 and (D) during weeks 7–12 in 2009. The figure shows the importance of the flood plain (green) area for refugia of the parasite population during the hot-dry season.