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Table 3 Variation in the median (binomial 95% CIs) number of bugs, and their proportional engorgement status, recorded immediately after each dog bioassay (n = 5 bioassays per dog)

From: Systemic insecticide treatment of the canine reservoir of Trypanosoma cruzi induces high levels of lethality in Triatoma infestans, a principal vector of Chagas disease

Treatment group Bravecto® NexGard® Comfortis®
Treated (3 dogs each)
 Total fed (exposed) 13 (13–15) 12 (9.36–14) 13 (12–14.82)
 Total in jar (potentially exposed) 15 (15–15) 15 (15–15) 15 (15–15.82)
 Proportion feda 0.87 (0.87–1.00) 0.80 (0.62–0.93) 0.87 (0.8–0.94)
 Proportion fully engorgeda 0.67 (0.55–0.87) 0.33 (0.21–0.58) 0.40 (0.28–0.52)
 Proportion of blood-fed that fully engorged 0.77 (0.67–0.87) 0.39 (0.24–0.73) 0.47 (0.34–0.65)
Control (1 dog each)
 Total fed (exposed) 14 (9–15) 15 (4–15) 14 (9–14)
 Total in jar 15 (15–15) 15 (15–15) 15 (15–15)
 Proportion feda 0.93 (0.60–1.00) 1.00 (0.27–1.00) 0.93 (0.60–0.93)
 Proportion fully engorgeda 0.40 (0–0.80) 0.33 (0–0.60) 0.33 (0.07–0.93)
 Proportion of blood-fed that fully engorged 0.44 (0–0.86) 0.50 (0–0.60) 0.56 (0.07–1.00)
  1. aProportion of all bugs offered to dogs in the bioassay (i.e. potentially exposed)