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Table 4 Determination of the LD50 of P. multocida 0818 and the Δcrp mutant

From: Identification of the crp gene in avian Pasteurella multocida and evaluation of the effects of crp deletion on its phenotype, virulence and immunogenicity

Route Strains Challenge dose (CFU) and survival LD50 (CFU)
103 104 105 106 107 108 109
Intranasal P. multocida 0818 5/5 7/8 8/16 1/16 0/16 0/8 0/8 8.66 × 104
S416 (Δcrp) - 8/8 7/8 11/16 7/16 1/16 0/8 7.4 × 106
  1. -, Not detected