Fig. 4

Summary of annual mean incremental cost, reductions in infections and vaccine doses per strategy. a Annual reduction in number of infections and incremental total societal costs per strategy. b Annual reduction in number of infections and vaccine doses per vaccine strategy. c Annual incremental total societal costs and vaccine doses costs per strategy. Strategies are vaccinating children 6–23 months (strategy I), 2–5 years (strategy II) and 6–14 years (strategy III) with either the Southern Hemisphere influenza vaccine (Strategy A) or Northern Hemisphere vaccine (Strategy B) or both (Strategy C: twice yearly 3-month vaccination periods, or Strategy D: year-round vaccination). The points mark posterior mean estimates and lines 95% credible intervals