Fluralaner systemic treatment of chickens results in mortality in Triatoma gerstaeckeri, vector of the agent of Chagas disease

Table 2 Logistic regression analysis of potential factors affecting blood feeding success, engorgement, and survivorship

Response variables	Explanatory variables	Levels in model	Odds ratio	95% Confidence interval	P-value
Blood feeding success	Product	Control	Reference
		Fluralaner	1.11	0.31–3.71	0.95
		Ivermectin	0.99	0.34–3.78	0.86
		Fenbendazole	1.04	0.74–13.3	0.15
	DPT		0.65	0.96–1.04	0.74
	Life stage	3rd instar	Reference
		4th instar	0.30	0.13–2.50	0.57
		5th instar	0.97	0.06–1.15	0.11
	DPT × Product	Fluralaner	0.97	0.96–1.08	0.59
		Ivermectin	10.1	0.92–1.02	0.25
		Fenbendazole	1.02	0.91–1.01	0.18
Engorgement	Product	Control	Reference
		Fluralaner	1.31	0.68–2.52	0.42
		Ivermectin	1.15	0.59–2.24	0.69
		Fenbendazole	1.45	0.76–2.80	0.27
	DPT		1.00	0.99–1.02	0.85
	Life stage	3rd instar	Reference
		4th instar	0.43	0.80–4.46	0.14
		5th instar	0.48	0.35–1.94	0.66
Survivorship	Engorgement score^a	1	Reference
		2	0.40	0.11–1.28	0.13
		3	0.23	0.08–0.64	0.01*

DPT Days post-treatment
*Statistically significant at P ≦ 0.05
^aEngorgements were scored with a number (ranging from 0 to 3) to correlate with the size of the blood meal, with 0 indicating unfed and 3 indicating fully fed

ISSN: 1756-3305