Sampling of wild-caught raccoons (Procyon lotor) from an area where oral rabies vaccine was distributed for inclusion in study, selected animals by rabies virus neutralizing antibody category, and change in group distribution between animal capture and challenge with rabies virus. Categories based on animal's rabies virus neutralizing antibody level: negative: <0.05 IU/mL, low: ≥0.05–0.11 IU/mL, medium: >0.11–<0.5 IU/mL, high: ≥0.5 IU/mL. Blood sampling time periods occurred at baseline (when animal was captured in the wild) and at challenge (when animal was challenged with rabies virus).