Figure 1. Computer simulation model of dengue transmission.
(A) Natural history of dengue model. Susceptible individuals are infected by mosquitoes, and mosquitoes are infected by humans. (B) Population density of the 20 km by 30 km region surrounding Bang Phae, Thailand, at a 1 km2 resolution. Red indicates high population density, yellow and white for low density, as indicated in the legend in units of people per km2. Population density data is from GRUMP [28]. (C) Movement of humans in the model. People start and end the day at home, and go to work or school during the day. (D) Movement of mosquitoes in the model. Aedes aegypti are associated with a single building. Each day, they may migrate to an adjacent location (e.g., house, school, temple), as indicated by the dashed lines, with a probability of 15% and to a random location with a probability of 1%.