Fig 4. The cholera incidence simulated by the model is presented for the next 10 years with vaccine intervention, along with the number of susceptible and vaccinated population members.

The intervention was initiated January 1, 2017, assuming a 60% vaccine efficacy, 3 year duration of immunity, and an average waiting time to be vaccinated of 50 weeks. The upper panel (A) presents the observed incidence of symptomatic cholera cases (orange and dark red), the model-fitted incidence of symptomatic cases (dark green), and both symptomatic and asymptomatic cases (light green). The lower panel (B) displays the numbers of susceptible (purple) and vaccinated (pink) individuals.