Cost-effectiveness (total and direct) associated with the implementation of horizontal, vertical and mixed vector control strategies in rural communities of the Moreno Department, Argentina, during 1993�C2004.

*In 2004 US$.1Observed values for a horizontal strategy based on community participation both in the attack and the surveillance phases of intervention.2Estimated values for a vertical strategy with two spraying cycles in the attack phase and a surveillance phase based on active detection of T. infestans infestation by NCS staff.3Estimated values for a mixed strategy (two spraying rounds in the attack phase performed by NCS staff followed by a surveillance phase based on community participation) in which vector-borne transmission of T. cruzi occurs (WT).4Estimated values for a mixed strategy that successfully interrupted vector-borne transmission of T. cruzi (WoT).