Figure 8.

EqPV-H oral transmission was demonstrated. Two horses were first inoculated intranasally (IN) with horse serum containing 1 × 10⁶ GE/ml EqPV-H, but did not become EqPV-H⁺ by 8 weeks. An additional inoculation was performed orally (PO) with horse serum containing 1 × 10⁷ GE/ml EqPV-H. Horse N did not become EqPV-H⁺ by 8 weeks after PO inoculation, therefore an additional inoculation was administered, as indicated. GE, genome equivalents.