Fig 1. Dose-response curves of infection prevalence for eight Ae. aegypti colonies challenged by six DENV strains.

The percentage of infected mosquitoes 12 days post oral challenge is shown as a function of the blood meal titer in log₁₀ FFU/ml. Each panel represents a different DENV strain. A non-African colony from Guadeloupe, French West Indies is included as a 100% Aaa reference. Lines are logistic regressions of the data, color-coded by mosquito population. FFU: focus-forming units.