Oral virus shedding of falcons during WNV lineage 1 challenge. The oral virus shedding of falcons during challenge is displayed. Cycle threshold values (Ct values) of swabs for all groups are shown. In box-and-whisker plots the ends of the whiskers represent the minimum and maximum values, respectively. Outliers are represented as black dots instead of whisker-ends. This includes 50% of the values of each group, with the median value of each group being represented by a line in the middle. Vaccination groups with statistical significant difference in the level of oral viral genome shedding in comparison to group E are labeled with an asterisk (ANOVA over all sampling days, p-values < α-levels of 0.05). There was no group with a statistically significant difference in duration of oral viral genome shedding (one-sided Wilcoxon rank sum test with continuity correction, cut-off Ct value 35.0, p-values < α-levels of 0.05).