Table 2. Dynamic Changes of the Hemagglutination-Inhibition Titers against the Seasonal H1N1 Virus after Administration of the 2009 A/H1N1 Influenza Vaccine.

Time	Seroprotection rate -% (95% CI)	Seroconversion rate - % (95% CI)	GMT (95% CI)
Pre (N = 58)	59 (45-71)	-	30 (24-38)
day 3 (N = 58)	59 (45-71)	3 (0-12)	32 (25-40)
day 5 (N = 58)	59 (45-71)	3 (0-12)	32 (25-41)
day 10 (N = 58)	60 (47-73)	3 (0-12)	36 (29-46)
day 14 (N = 58)	64 (50-76)	3 (0-12)	38 (30-47)
day 21 (N = 58)	64 (50-76)	3 (0-12)	37 (30-46)