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FIGURE 4— —Comparison of cumulative vaccine purchase costs per child in 3 potential vaccine introduction scenarios, 2002–2020.
Note. Early scenario = 5 new vaccines by 2011 and 2 more vaccines by 2020; even scenario = a new vaccine every 2 to 3 years; late scenario = 2 new vaccines by 2011 and 1 more new vaccine every other year between 2011 and 2020. All scenarios reflect the introduction of 7 new noncombination vaccines by 2020, with costs derived from the regression model of historical public-sector vaccine cost trends. Combination vaccines are not shown. All costs are in 2001 US dollars.