Figure 1.
Long-term effects of the fully horizontal strategy.
(A) Domestic and peridomestic prevalence of infestation by Triatoma infestans (bars) and number of rural houses sprayed during 1993–2004 (line) in Moreno Department. Numbers on top of bars represent the total number of surveyed houses. (B) Reported number of Chagas disease cases in Moreno Department during 1988–1993 (mean) and 1994–2004.
Figure 2.
Effects of the frequency of residual insecticide spraying of individual rural communities during 1993–2000 on the prevalence of domestic infestation by T. infestans observed in 2000 in Moreno Department.
Bold lines represent the median, boxes the first and third quartiles, and vertical lines the range.
Figure 3.
Annual direct costs (in 2004 US$) of the implementation of a fully horizontal (observed data), vertical or mixed (estimated data) vector control strategy in rural communities of Moreno Department.
Table 1.
Cost-effectiveness (total and direct) associated with the implementation of horizontal, vertical and mixed vector control strategies in rural communities of the Moreno Department, Argentina, during 1993–2004.
Figure 4.
Sensitivity analysis of the different parameters used to estimate the direct cost-effectiveness of each vector control strategy in Moreno Department.
Lambda refers to disease incidence (cases per year); acute infection rate to the percentage of total cases represented by notified acute cases, and per diem represents a 50% reduction or the complete elimination of per diems. * indicates the baseline direct CE values. Mixed WT represents a mixed strategy that successfully interrupted disease transmission, whereas mixed WoT a mixed strategy that did not interrupted disease transmission.
Figure 5.
Cumulative projection of the direct cost-effectiveness ratio (expressed in US$ per averted case) for each vector control strategy.
Mixed WT represents a mixed strategy that successfully interrupted disease transmission, whereas mixed WoT a mixed strategy that did not interrupted disease transmission.
Table 2.
Published primary sources of unit cost per house of controlling triatomine bugs.