Fig. 2From: Vector competence of human-biting ticks Ixodes scapularis, Amblyomma americanum and Dermacentor variabilis for Powassan virusPOWV II infection rates of nymphal I. scapularis, D. variabilis and A. americanum ticks. a Infection rates determined by dividing the number of infected individuals by the total number tested, by species. Data were statistically examined using a Fisher’s Exact Test. b POWV II genome equivalents (GE) per infected nymphal leg. Statistical significance was tested using a one-way ANOVA and Tukey’s multiple comparisons test (****P < 0.0001)Back to article page