. 2015 Mar 4;89(10):5427–5440. doi: 10.1128/JVI.03636-14

TABLE 4.

Loss of serum reactivity in hemagglutination inhibition experiments

Virus	Measurement result with indicated antisera																						Median % of control
	A/CA/07		1332		1540		1551		1553		1728		1765		2253		2364		2419		2579
	1/dilution^a	% of control	1/dilution^a	% of control	1/dilution^a	% of control	1/dilution^a	% of control	1/dilution^a	% of control	1/dilution^a	% of control	1/dilution^a	% of control	1/dilution^a	% of control	1/dilution^a	% of control	1/dilution^a	% of control	1/dilution^a	% of control
A/California/07/09_Control	905	100	1,810	100	453	100	640	100	640	100	640	100	2,560	100	1,810	100	453	100	226	100	453	100	100
rA/New York/1682/2009	640	71	1,280	71	320	71	905	141	640	100	226	35	1,810	71	1,280	71	226	50	320	142	226	50	71
rA/Wisconsin/02/2011	226	25	320	18	320	71	160	25	160	25	80	13	453	18	320	18	80	18	226	100	57	13	18
rA/St. Petersburg/100/2011	57	6	453	25	226	50	160	25	320	50	160	25	1,280	50	640	35	226	50	160	71	113	25	35
rA/California/52/2011	320	35	905	50	226	50	381	60	320	50	113	18	1,076	42	640	35	134	30	226	100	113	25	42
A/California/3546/2014 (16 January 2014)	160	18	640	35	640	141	190	30	80	13	80	13	640	25	538	30	134	30	640	283	57	13	30
A/California/3543/2014 (6 January 2014)	160	18	453	25	640	141	160	25	80	13	80	13	640	25	453	25	113	25	640	283	57	13	25
A/New York/3627/2014 (12 January 2014)	160	18	640	35	640	141	226	35	80	13	80	13	905	35	640	35	113	25	640	283	68	15	35
A/New York/3626/2014 (2 January 2014)	160	18	320	18	640	141	226	35	80	13	80	13	640	25	453	25	113	25	640	283	57	13	25
A/Texas/3668/2014 (3 January 2014)	160	18	320	18	640	141	226	35	80	13	80	13	640	25	453	25	113	25	640	283	57	13	25
A/Texas/3665/2014 (3 January 2014)	160	18	380.7	21	1,280	283	226	35	80	13	80	13	905	35	538	30	113	25	905	400	68	15	25

Dilution factor of serum resulting in loss of hemagglutination inhibition (geometric mean of the log dilution factor).