TABLE 3.

Viremia

GroupPigNo. of PFU/ml on dpce:
01234567
−21a51<0.7<0.7<0.7<0.7<0.7<0.7<0.7<0.7
52<0.7<0.7<0.7<0.7<0.7<0.7<0.7<0.7
53<0.7<0.7<0.7<0.7<0.7<0.7<0.7<0.7
54<0.7<0.7<0.7<0.7<0.7<0.7<0.7<0.7
55<0.7<0.7<0.7<0.7<0.7<0.7<0.7<0.7
−7b56<0.7<0.7<0.7<0.7<0.7<0.7<0.7<0.7
57<0.7<0.7<0.7<0.7<0.7<0.7<0.7<0.7
58<0.7<0.7<0.7<0.7<0.7<0.7<0.7<0.7
59<0.7<0.7<0.7<0.7<0.7<0.7<0.7<0.7
60<0.7<0.7<0.7<0.7<0.7<0.7<0.7<0.7
DIc61<0.74.15.6<0.7<0.7<0.7NDND
62<0.74.25.8<0.7<0.7<0.7NDND
63<0.74.25.91.7<0.7<0.7NDND
DCd64<0.7<0.7<0.73.55.72.4<0.7<0.7
65<0.7<0.7<0.72.24.02.2<0.7<0.7
66<0.7<0.7<0.72.14.5<0.7<0.7<0.7
67<0.7<0.7<0.73.44.3<0.7<0.7<0.7
68<0.7<0.7<0.74.52.3<0.7<0.7<0.7
  • a Animals were vaccinated on dpc −21 (infected by direct contact with directly inoculated animals).

  • b Animals were vaccinated on dpc −7 (infected by direct contact with directly inoculated animals).

  • c Animals were directly inoculated on the day of challenge.

  • d Naïve animals were infected by direct contact with directly inoculated animals.

  • e Day postchallenge of directly inoculated animals. ND, not determined.