Figure 3

Fig. 3: analysis of costs and benefits of Chagas disease vector control for the Southern Cone region, assuming (a) initial attack phase followed by continued annual vigilance, or (b) initial attack phase with no subsequent vigilance. With vigilance, costs sum over 12 years to approximately US$350 million, with annual benefits rising to a continuous plateau of just over US$53 million per year. Without vigilance, total intervention costs are reduced by 5.4%, but benefits are reduced by 33% and decline to zero after 11 years (modified from Schofield & Dias 1991, and Akhavan 2000).