Assessment of exposure to influenza A viruses in pigs between weaning and market age

Table 5 Wilcoxon paired signed-rank test of level of titers of pigs at the end of nursery period compared to level of titers at the end of the finisher period

Comparison was made for the same pig having time as “treatment”.
^*Different H3N2 variants broadly classified into cluster 4 of H3N2 swine influenza A virus and isolated in Ontario in 2012 and used in the hemagglutination inhibition assay.
^†H3N2 and H1N1 viruses detected in the study and used as antigens in the hemagglutination inhibition assay.
^‡H1N2 with hemagglutinin of the 2009 pandemic lineage and neuraminidase of the Cluster 4 H3N2 IAV-S.
^§H1N1 IAV-S broadly classified as the classical swine H1N1 virus used in the hemagglutination inhibition assay.
^¶H1N1 IAV-S of the 2009 H1N1 pandemic lineage used in the hemagglutination inhibition assay.
^#Total number of the pigs sampled at the end of finisher.
^>Pigs presented higher titers in the end of nursery when compared to the end of finisher.
^>>Pigs presented lower titers at the end of nursery when compared to the end of finisher.
^≠There is no difference in pigs titers at the end of nursery when compared to the end of finisher.

ISSN: 1297-9716