Fig. 4

The spatial clustering of malaria per year. The primary clusters (1) are shows in orange, the secondary clusters (2) are show in yellow, the third cluster (3) and the fourth (4) are in shades of green, the fifth (5) and sixth are in shades of blue (6). Clusters was done on SIR ratios and the cluster ranks is based on the value of log-likelihood ratio with p value < 0.05, the one or the group of district which have the highest value is consider the primary cluster