Simulation of malaria transmission model with control. Malaria transmission with changing parameters. Here we simulated malaria using the parameters from the first column of Figure 2 until they reached equilibrium at which point we changed the parameters to those in the second column and allowed malaria to reach equilibrium again. (a) We used the parameters from Figure 2a from 0 to 3000 and the parameters from Figure 2b from 3000 to 6000. (b) We used the parameters from Figure 2c from 0 to 3000 and from Figure 2d from 3000 to 6000.