Table 2.

Neutralization assays for the highest and lowest HI titer samples.

Farm IDa	Sample IDb	HI titerc		NI titer d
		D/13N	D/46N	D/46N
J5(10)	150	640	640	80
	104	10	20	20
J6(10)	51	320	160	160
	110	20	20	10
J7(6)	23	320	160	40
	177	10	20	10
J8(6)	169	160	320	80
	30	<10	10	10
J9(6)	28	160	160	40
	1	10	20	10
J10(8)	229	320	320	160
	116	<10	<10	<10
J14(10)	85	320	320	160
	33	20	20	10
J17(10)	52	320	320	320
	94	<10	<10	<10
J18(10)	311	320	320	160
	127	160	160	80
J19(8)	156	640	640	160
	85	20	20	<10
J20(8)	143	640	320	160
	64	160	160	80
J23(7)	129	320	320	80
	71	40	40	<10
J25(10)	2	1280	640	320
	119	<10	<10	<10
J26(10)	98	640	640	160
	110	<10	<10	<10
J28(7)	116	320	320	80
	117	20	20	10
J31(10)	230	160	320	80
	217	<10	<10	20
J33(5)	128	80	320	80
	6	20	20	20
J34(10)	136	320	320	320
	179	<10	<10	<10
J35(10)	110	640	320	80
	59	<10	20	10
J36(10)	93	160	320	160
	26	<10	<10	<10
J37(8)	93	320	320	80
	122	<10	<10	<10
J38(10)	76	320	320	80
	26	20	40	<10
J39(5)	7	160	320	160
	11	10	20	20
J45(4)	70	160	320	160
	71	40	80	10
J48(9)	208	320	320	160
	180	40	40	20
J54(7)	275	640	640	160
	92	20	10	<10
J55(6)	39	640	640	160
	26	<10	<10	<10
J56(5)	19	160	320	80
	97	20	20	10
J57(7)	140	320	320	80
	23	<10	<10	<10
J60(6)	27	320	640	160
	55	10	20	<10
J62(8)	5	640	640	320
	33	40	80	20
J63(5)	133	640	640	80
	130	40	40	20
J64(6)	14	640	640	320
	101	10	20	20
J66(5)	316	320	320	80
	278	10	20	20
J67(6)	110	320	320	320
	88	80	160	160
J68(5)	9	640	640	160
	133	10	20	10
J69(5)	26	640	640	80
	28	20	20	20
J70(5)	82	320	640	160
	96	<10	<10	<10
J71(5)	72	640	640	320
	15	80	160	40
J72(5)	95	320	320	160
	274	<10	<10	<10

Note:

^aThe 46 farms listed were selected randomly from 73 farms in Nebraska;

^bTwo samples with the highest and lowest HI titers were selected for neutralization inhibition assays;

^cHI assays were performed against two prototype viruses D/13N and D/46N using 0.5% turkey red blood cells;

^dNI assays were performed in human rectal tumor (HRT-18G) cells against the prototype virus D/46N.