Table 2.

Test statistics of categorical vector competence indices

		(a) Proportion infected		(b) Proportion infected with disseminated infection
Source of variation	d.f.	L-R χ2	P-value	L-R χ2	P-value
Family	2	16.2	0.0003	2.34	0.3107
Isolate	2	29.4	<0.0001	38.8	<0.0001
Family*Isolate	4	14.8	0.0051	6.28	0.1793
Block	1	0	1.0	0	0.9882
Family*Block	2	0.64	0.7247	0.84	0.6574
Isolate*Block	2	0.64	0.7262	0.27	0.8753
Family*Isolate*Block	4	1.29	0.8634	11.9	0.0183

The table shows the nominal logistic regression for the proportion of (a) mosquitoes with detectable viral RNA in their bodies (thorax+abdomen) and (b) infected mosquitoes (excluding uninfected) with a disseminated infection in their head/legs (determined by FFA in Vero cells) as a function of mosquito isofemale families, virus isolates, experimental blocks, and their interactions.