Chicken ID No Virus recoverya
Days p.c.b No. of chickens from which each virus was recovered Swab (log TCID50/ml)
Intraoral Cloacal
Immunized Chickens #55 2 0 0
#56 2 1.0 0
#57 2 0 0
Non-Immunized Chickens #58 2+ 4.3 4.0
#59 2+ 5.0 4.7
#60 2+ 4.8 4.0
a0 indicates no virus was isolated from chickens
bThe number indicates the sampling day p.c.; ‘‘+’’ indicates that chickens died on that day
Table 2: Virus recovery in vaccinated chickens.