Fig. 3From: School-based malaria prevalence: informative systematic surveillance measure to assess epidemiological impact of malaria control interventions in the Democratic Republic of the CongoEstimation of malaria risk and infection frequency between rural and urban Health Areas (HAs). a Estimation of mean malaria risk with upper and lower range in rural vs. urban HAs from 2009 to 2014. b Parasite infection frequency (all species) in urban and rural HAs from 2009 to 2014Back to article page