Figure 4
From: Limited efficacy of West Nile virus vaccines in large falcons (Falco spp.)
Antibodies detected by ELISA and micro-virus neutralization test (VNT) during challenge in falcons. In Figure 4A antibodies of all groups detected by the ID Screen© WN competition ELISA (IDVet, Grabels, France) during the challenge period are displayed. Optical density at 450 nm is converted to signal/noise% (S/N%) ratio (S/N% = ODsample/ODnegative control * 100), with values ≤ 40% considered positive, > 40% and ≤ 50% equivocal and > 50% negative. The threshold for positive results is indicated as a solid red line. In Figure 4B antibody titers of all groups determined by VNT against homologous challenge virus (neutralization titer) during the challenge period are displayed. Data are presented in a box-and-whisker plot, where the ends of the whiskers represent the minimum and maximum values, respectively. Outliers are represented as points instead of whisker-ends. The box includes 50% of the values of each group and the line in the middle of each group represents the median value of each group. Seroconversion occurred at 3 to 6 dpi.