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Table 7 Frequency of detection of challenge virus in different vaccine groups

From: Characterization of emerging Newcastle disease virus isolates in China

Group Post-challenge samples (no. positive/total)
Day 2   Day 4   Day6   Day9  
Oa Cb O C O C O C
Oil- TC/1 12/12c 10/12 4/12 4/12 2/12 1/12 0 0
Oil-Las 12/12 11/12 10/12 8/12 7/10 6/10 3/10 2/10
Live-Las 12/12 10/12 9/12 8/12 5/10 4/10 2/9 2/9
Oil- TC/1plus Live-Las 12/12 10/12 3/12* 3/12* 1/12 0 0 0
Oil-Las plus Live-Las 12/12 11/12 8/12 7/12 5/12 3/12 2/11 1/11
Un-inoculated control 12/12 12/12 12/12 12/12 NSd NS NS NS
  1. aOropharyngeal swabs. bCloacal swabs. cThe number in front of the slash represents the number of animals, which had detectable viral genome RNA; the number behind the slash stands for the total number of animals in this group. dNo survivors. *Significant difference (P < 0.05) among immunized groups with the column