Table 1.

Distribution of Hemagglutination Inhibition Titers Using Turkey or Guinea Pig Red Blood Cells

	Minimum (HAI titer)	25th percentile (HAI titer)	Median (HAI titer)	75th percentile (HAI titer)	Maximum (HAI titer)
Turkey RBCs
Baseline	1:5	1:40	1:80	1:320	1:1,280
Day 3	1:5	1:80	1:80	1:160	1:2,560
Day 28	1:5	1:80	1:320	1:640	1:2,560
Day 75	1:5	1:80	1:320	1:320	1:2,560
Guinea pig RBCs
Baseline	1:5	1:10	1:20	1:40	1:640
Day 3	1:5	1:10	1:20	1:40	1:640
Day 28	1:10	1:40	1:80	1:160	1:640
Day 75	1:10	1:40	1:80	1:160	1:640

HAI, hemagglutination inhibition; RBCs, red blood cells.