Virus and genome detection was comparable among animals with strong positive reactions from 5 dpc (data not shown). Following chal-lenge infection, antibodies dropped in several immunized animalsindicating consumption. These reactions were most pronounced ingroup T01 at 5 dpc. In this group only one animal remained doubt-ful at 5 dpc (see Fig. 1). All but one of the vaccinated animals waspositive by the day of euthanasia. No antibodies could be detectedin the controls (see Fig. 1).