Table 1. Assessment of the differences in tissue infection rates in *w*Mel versus wild-type mosquitoes using the sign test.The experimental data were treated as pairs of binomial observations corresponding to the proportions infected of the *w*Mel and wild-type mosquito groups fed on a particular blood sample, which were sampled on a specific day. The table rows present the number of observation pairs for which the proportion of *w*Mel mosquitoes infected was less than, equal to, or greater than the proportion of wild-type mosquitoes infected for different data subsets. Subsets are shown that stratify the observations by tissue type, DENV serotype, and the day after infection that mosquitoes were assayed. The two-sided *P* value is given, with *P* values <0.05 shown in italics.