TABLE 1.

Mean turbinate atrophy scores and percentages of the lungs affected by pneumonia in pigs inoculated with B. bronchiseptica strains KM22, TN27 (ΔfhaB), TN28 (Δprn), or PBS

Day of necropsyExperimental groupMean turbinate atrophy score (range)Mean % of pneumonia (range)
7PBS control0.5 (0-1)0 (0)
KM222 (0-4)6.5 (0-18)
TN27 (ΔfhaB)0 (0)0 (0)
TN28 (Δprn)2 (0-4)2.25 (0-4)
14PBS control0 (0)0 (0)
KM223.33 (0-8)1.67 (1-2)
TN27 (ΔfhaB)0.5 (0-2)0 (0)
TN28 (Δprn)3 (0-8)2.25 (0-4)
28PBS control1 (1)0 (0)
KM222.67 (0-6)0 (0)
TN27 (ΔfhaB)0.25 (0-1)0 (0)
TN28 (Δprn)2.5 (0-5)6.25 (0-25)
56PBS control0.5 (0-1)0 (0)
KM222.5 (1-4)6.75 (4-9.5)
TN27 (ΔfhaB)0.75 (0-2)0 (0)
TN28 (Δprn)3 (2-6)5.25 (3-11)