Table 2. Isolation of vaccine viruses from nasal washes of ferrets in embryonated chicken eggs on day 3 post vaccination.

Vaccine	Group	Vaccine virus titer
		(lg EID50/ml, Mean ± SEM)
		(No. isolated/total)
T-LAIV (B/Vic)	1 and 2	4.53 ± 0.33 (6/6)
T-LAIV (B/Yam)	3 and 4	4.38 ± 0.12 (6/6)
Q-LAIV	5 and 6	4.20 ± 0.12 (6/6)
Non-vaccinated ferrets	7, 8 and 9	< 1.5 (0/9)