Geographical distribution of malaria. A patients screened for malaria at CMCH 2008–2011 shown as number per Thana. B Percent of those screened in each Thana who were positive for P. falciparum. Where a Thana had case(s) of P. falciparum but less than 5 individuals were screened, percentages are not shown. Thana boundaries are white and District boundaries blue.