Figure 2From: Simulation-guided design of serological surveys of the cumulative incidence of influenza infection Baseline titre level (LHS, blue) and boosting level (RHS, red) for the four different scenarios considered here: Scenario A, parts A and B; Scenario B, parts C and D; Scenario C, parts E and F; and Scenario D, parts G and H. See Methods for details of data sources and assumptions for each scenario.Back to article page