Table 4.

Replication, transmission, and seroconversion of chickens infected with representative H6 AIVs

Virus	No. of positive chickens/total no. of chickens (peak virus titer [log10 EID50/ml])a				Mean HI titer (log2 serum dilution) (no. of positive chickens/total no. of chickens)
	Inoculated		Direct contact
	T	C	T	C	Inoculated	Contact
206/H6N8	0/6	0/6	0/6	0/6	475 (6/6)	0/6
W312/H6N1	5/6 (3.7)b	1/6 (1.7)c	0/6	0/6	217 (6/6)	17 (3/6)
557/H6N2	0/6	0/6	0/6	1/6 (3.2)d	189 (6/6)	40 (2/6)
575/H6N8	1/6 (1.7)e	0/6	0/6	0/6	133 (6/6)	15 (2/6)
925/H6N2	0/6	0/6	0/6	0/6	384 (6/6)	(0/6)
269/H6N8	0/3	0/3	0/3	0/3	133 (3/3)	(0/3)
1977/H6N2	0/3	0/3	0/3	0/3	73 (3/3)	(0/3)

^aT, trachea; C, cloaca.

^bVirus shedding for 5 days and peak virus titer at 1 dpi.

^cTiter of 1.7 log₁₀ EID₅₀/ml at 7 dpi.

^dTiter of 3.2 log₁₀ EID₅₀/ml at 5 dpi.

^eTiter of 1.7 log₁₀ EID₅₀/ml at 7 dpi.