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
8.66 × 104
S416 (Δcrp)
-
8/8
11/16
7/16
7.4 × 106