Table 1.

Experimental vaccination and virus challenge groups.

	No. of	Vaccine	Challenge virus
Group	chicks	dose	Day	Virus	Dose
att-IBM41	20	103.5	21	WT IBM41	105
att-IB2	20	103.5	21	WT IBM41	105
att-IBvar2	20	103.5	21	WT IBvar2	105
Challenge control-I	20	–	21	WT IBM41	105
Challenge control-II	20	–	21	WT IBvar2	105
Negative control	20	–	–	–	–

WT, wild-type