Figure 2.

Modeling the dynamics of cholera in Haiti. The panel shows the number of cholera-susceptible individuals in the simulated population from one stochastic run of a model. Millions of people were infected when cholera was first introduced in 2010, causing a steep drop in the number of residents susceptible to cholera. After the initial massive outbreaks, our model predicts that there were annual cycles in the number of susceptible individuals, with the net number increasing owing to births and waning immunity during the dry seasons and decreasing during rainy-season outbreaks. We simulated different mass OCV vaccination strategies starting in January 2019.