Table 1.

P. multocida swine isolates tested for toxin production

Capsular and somatic serotypeGeographic originNo. of strains testedExpression of toxinaHybridization with ToxA
A:3Iowa7
A:3West Virginia1
A:3Arkansas2
A:3Michigan1
A:3Wisconsin1
A:3Maylasia3
A:3South America1
A:3, 4Illinois2
A:3, 12Iowa1
A:3, 12Nebraska3
A:15South America1
D:2, 12Missouri1
D:3Iowa1
D:3Michigan2
D:3Wisconsin1
D:3, 12Iowa1
D:3, 12Arkansas7
D:3, 12Belgium2
D:7, 12Belgium1
D:12Iowa1
D:12Brazil1
D:3, 11, 12Iowa2
A:3Nebraska3++
A:3Norway3++
A:3, 4United Kingdom1++
D:−Nebraska1++
D:3Iowa1++
D:3Wisconsin2++
D:3Singapore2++
D:12Nebraska2++
D:12Iowa1++
D:12Arkansas1++
  • a As determined by colony blot assay with a toxin-specific monoclonal antibody (13).