Fig. 2

Outcomes associated with different vaccine roll-out scenarios for 27 African Union Members using viral vector vaccines. This figure presents the relative reduction in outcomes as a result of different vaccine roll-out scenarios (i.e. combinations of vaccination programme start dates and vaccine roll-out rates). Relative reduction is defined as (1 - outcome with vaccination/outcome without vaccination). Greater relative reductions indicate more effective vaccine roll-out scenarios. Results for intermediate health outcomes and for using mRNA vaccines can be found in Additional File 1: Fig. S8-10. DALYs: disability-adjusted life years