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Serologic cross-reactivity with pandemic (H1N1) 2009 virus in pigs, Europe
Constantinos S Kyriakis1, Christopher W Olsen, Susy Carman
1Ghent University, Ghent, Belgium.
Emerging Infectious Diseases
|December 25, 2009
Abstract:
We tested serum samples from pigs infected or vaccinated with European swine influenza viruses (SIVs) in hemagglutination-inhibition assays against pandemic (H1N1) 2009 virus and related North American SIVs. We found more serologic cross-reaction than expected. Data suggest pigs in Europe may have partial immunity to pandemic (H1N1) 2009 virus.
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Cross-reactivity
Overview
Viral Recombination
Cells are sometimes infected by more than one virus at once. When two viruses disassemble to expose their genomes for replication in the same cell, similar regions of their genomes can pair together and exchange sequences in a process called recombination. Alternatively, viruses with segmented genomes can swap segments in a process called reassortment.

