Figure 2

Fig. 2: infestations by Triatoma infestans detected in November 1999 using 1-2 Tetra Brik boxes according to installation site (on vertical posts and beneath the thatched roof) in peridomestic sites that had been negative (A) or positive (B) by timed manual collections in late April 1999, Olta and nearby villages, April 1999-November 1999. Empty bars are based on the finding of any sign of infestation, excluding T. garciabesi or T. guasayana; hatched bars are based on the finding of T. infestans bugs, exuviae or eggs. Numbers on top of each bar represent the total number of sites inspected for infestation by the recovered devices.