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. 2004 Jun;72(6):3436–3443. doi: 10.1128/IAI.72.6.3436-3443.2004

TABLE 2.

Virulence of VP161 and AL251 in groups of 10 chickens

Strain Dose (CFU) Mean time to death (range) (h)
VP161 1.5 × 102 <20 (NDa)
1.5 × 103 <20 (ND)
AL251 70 65 (33-120)
7 × 102 30 (23-42)
a

ND, not determined.