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Table 3 Geometric mean antibody titers in hemagglutination-inhibition (HI), virus-neutralization (VN), and neuraminidase-inhibition (NI) assays at 14 days post-inoculation of pigs with various influenza viruses.

From: Cross-protection against European swine influenza viruses in the context of infection immunity against the 2009 pandemic H1N1 virus: studies in the pig model of influenza

  

Antibody titer against

Virus for inoculation

No. of pigs

A/California/04/09

Sw/Gent/28/10

Sw/Côtes d’Armor/0046/08

Sw/Gent/26/12

Sw/Gent/172/08

HI

VN

NI

HI

VN

NI

HI

VN

NI

HI

VN

NI

HI

VN

NI

A/California/04/09 (pH1N1)

20

89

76

109

<10

3

16

<10

9

22

<10

4

<10

<10

<2

<10

Sw/Gent/28/10 (H1N1)

5

<10

3

16

80

384

320

<10

3

40

<10

4

<10

<10

<2

<10

Sw/Côtes d’Armor/0046/08 (rH1N1)

5

<10

2

30

<10

<2

40

70

795

211

20

262

<10

<10

<2

<10

Sw/Gent/26/12 (H1N2)

5

<10

<2

<10

<10

<2

<10

15

114

<10

127

1276

46

<10

<2

15

Sw/Gent/172/08 (H3N2)

3

<10

<2

<10

<10

<2

<10

<10

<2

<10

<10

<2

12

160

347

381

  1. The detection limits were 1:2 in the VN assay, and 1:10 in HI and NI assays. Negative samples were assigned a value of half the minimum detectable titer for the calculation of geometric mean antibody titers. Values in bold are titers against the homologous virus.
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Veterinary Research

ISSN: 1297-9716