TABLE 2.

Numbers of reisolated wild-type (strain 10) and mutant (strain 10ΔFBPS) bacteria from organs of infected piglets (mean actual inoculation ratio 65% mutant strain)

SampledNo. of bacteria (CFU/ml) for pig no.
4664466546664667
w.t.amut.b% mut.cw.t.amut.b% mut.cw.t.amut.b% mut.cw.t.amut.b% mut.c
Tonsil1.77 × 1053.29 × 105654.35 × 1052.42 × 106855.34 × 1048.73 × 104617.94 × 1053.96 × 10533
Pus joint 16.75 × 104<1001.02 × 1025.2 × 10284
Pus joint 25.15 × 104<100
CNSe1.88 × 105<100
  • a Number of wild-type bacteria found (CFU/ml).

  • b Number of mutant bacteria found (CFU/ml).

  • c Percentage of mutant bacteria calculated as follows: b/(a+b) × 100%.

  • d Only relevant organs are depicted.

  • e CNS, central nervous system.