| Literature DB >> 20926110 |
Ji-Young Min1, Grace L Chen1, Celia Santos1, Elaine W Lamirande1, Yumiko Matsuoka1, Kanta Subbarao1.
Abstract
The hemagglutinin of the 2009 pandemic H1N1 influenza virus is a derivative of and is antigenically related to classical swine but not to seasonal human H1N1 viruses. We compared the A/California/7/2009 (CA/7/09) virus recommended by the WHO as the reference virus for vaccine development, with two classical swine influenza viruses A/swine/Iowa/31 (sw/IA/31) and A/New Jersey/8/1976 (NJ/76) to establish the extent of immunologic cross-reactivity and cross-protection in animal models. Primary infection with 2009 pandemic or NJ/76 viruses elicited antibodies against the CA/7/09 virus and provided complete protection from challenge with this virus in ferrets; the response in mice was variable and conferred partial protection. Although ferrets infected with sw/IA/31 virus developed low titers of cross-neutralizing antibody, they were protected from pulmonary replication of the CA/7/09 virus. The data suggest that prior exposure to antigenically related H1N1 viruses of swine-origin provide some protective immunity against the 2009 pandemic H1N1 virus. Published by Elsevier Inc.Entities:
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Year: 2010 PMID: 20926110 PMCID: PMC4792254 DOI: 10.1016/j.virol.2010.09.009
Source DB: PubMed Journal: Virology ISSN: 0042-6822 Impact factor: 3.616