Laboratory evidence on the vector competence of European field-captured Culex theileri for circulating West Nile virus lineages 1 and 2

Table 2 Logistic regression models performed to assess the relationship between the detection of viable viral particles in saliva and the viral copies in bodies and heads and lineage of the virus

Model	Dependent variable (reference)	Factors (reference)	Estimate	Std Error	Z	OR	95% CI	P
1	Saliva (negative saliva)	Log₁₀ viral copies in body	2.14	0.76	2.81	8.53	1.98–23.59	0.005*
1	Saliva (negative saliva)	Lineage (WNV-2)	−0.81	0.57	−1.42	0.45	0.14–1.33	0.156
2	Saliva (negative saliva)	Log₁₀ viral copies in head	4.01	1.16	3.44	54.92	8.06–738.39	0.001*
2	Saliva (negative saliva)	Lineage (WNV-2)	−0.6	0.7	−0.85	0.55	0.13–2.21	0.398

Std Error, standard error; Z, Z-value; OR, odds ratio; 95% CI, 95% confidence interval; P, P-value
^*Statistically significant

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