Skip to main content

Advertisement

Table 2 Challenge-vaccination trial program

From: Epidemiology and immunoprotection of nephropathogenic avian infectious bronchitis virus in southern China

Group 1st Vaccination (5 days old) 1st Vaccination Dose 2nd Vaccination (10 days old) 2st Vaccination Dose Death rate (%)
1 H120+W93 0.03 ml1 PBS 0.2 ml 35
2 H120+W93 0.03 ml H120+W93 0.03 ml 15
3 H120+W93 0.03 ml YL6 0.2 ml 0
4 PBS 0.03 ml PBS 0.2 ml 100
  1. 1 Dose per chicken, consist of H120 (103.5EID50) and W93 (104.7EID50) at least.