Molecular mechanisms of interspecies transmission and pathogenicity of influenza viruses: Lessons from the 2009 pandemic.
Identifieur interne : 000618 ( Ncbi/Curation ); précédent : 000617; suivant : 000619Molecular mechanisms of interspecies transmission and pathogenicity of influenza viruses: Lessons from the 2009 pandemic.
Auteurs : Hans D. Klenk [Allemagne] ; Wolfgang Garten ; Mikhail MatrosovichSource :
- BioEssays : news and reviews in molecular, cellular and developmental biology [ 1521-1878 ] ; 2011.
Descripteurs français
- KwdFr :
- Animaux, Grippe chez les oiseaux (transmission), Grippe chez les oiseaux (épidémiologie), Grippe humaine (transmission), Grippe humaine (épidémiologie), Humains, Oiseaux, Pandémies, Sous-type H2N2 du virus de la grippe A (génétique), Sous-type H2N2 du virus de la grippe A (pathogénicité), Sous-type H3N2 du virus de la grippe A (génétique), Sous-type H3N2 du virus de la grippe A (pathogénicité), Sous-type H5N1 du virus de la grippe A (génétique), Sous-type H5N1 du virus de la grippe A (pathogénicité), Spécificité d'hôte, Virus recombinants (génétique), Virus recombinants (pathogénicité).
- MESH :
- génétique : Sous-type H2N2 du virus de la grippe A, Sous-type H3N2 du virus de la grippe A, Sous-type H5N1 du virus de la grippe A, Virus recombinants.
- pathogénicité : Sous-type H2N2 du virus de la grippe A, Sous-type H3N2 du virus de la grippe A, Sous-type H5N1 du virus de la grippe A, Virus recombinants.
- épidémiologie : Grippe chez les oiseaux, Grippe humaine.
- Animaux, Humains, Oiseaux, Pandémies, Spécificité d'hôte.
English descriptors
- KwdEn :
- Animals, Birds, Host Specificity, Humans, Influenza A Virus, H2N2 Subtype (genetics), Influenza A Virus, H2N2 Subtype (pathogenicity), Influenza A Virus, H3N2 Subtype (genetics), Influenza A Virus, H3N2 Subtype (pathogenicity), Influenza A Virus, H5N1 Subtype (genetics), Influenza A Virus, H5N1 Subtype (pathogenicity), Influenza in Birds (epidemiology), Influenza in Birds (transmission), Influenza, Human (epidemiology), Influenza, Human (transmission), Pandemics, Reassortant Viruses (genetics), Reassortant Viruses (pathogenicity).
- MESH :
- epidemiology : Influenza in Birds, Influenza, Human.
- genetics : Influenza A Virus, H2N2 Subtype, Influenza A Virus, H3N2 Subtype, Influenza A Virus, H5N1 Subtype, Reassortant Viruses.
- pathogenicity : Influenza A Virus, H2N2 Subtype, Influenza A Virus, H3N2 Subtype, Influenza A Virus, H5N1 Subtype, Reassortant Viruses.
- transmission : Influenza in Birds, Influenza, Human.
- Animals, Birds, Host Specificity, Humans, Pandemics.
Abstract
The emergence of the 2009 H1N1 virus pandemic was unexpected, since it had been predicted that the next pandemic would be caused by subtype H5N1. We also had to learn that a pandemic does not necessarily require the introduction of a new virus subtype into the human population, but that it may result from antigenic shift within the same subtype. The new variant was derived from human and animal viruses by genetic reassortment in the pig, supporting the concept that this animal is the mixing vessel for the generation of new human influenza viruses. Although it is generally believed that the 2009 outbreak was mild, there have been severe cases particularly among the young and the middle-aged. Pathogenicity and host range are determined to a large extent by the polymerase, the haemagglutinin and the NS1 protein of influenza A viruses. There is evidence that mutations of these proteins may change the pathogenicity of the new virus.
DOI: 10.1002/bies.201000118
PubMed: 21319184
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pubmed:21319184Le document en format XML
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<front><div type="abstract" xml:lang="en">The emergence of the 2009 H1N1 virus pandemic was unexpected, since it had been predicted that the next pandemic would be caused by subtype H5N1. We also had to learn that a pandemic does not necessarily require the introduction of a new virus subtype into the human population, but that it may result from antigenic shift within the same subtype. The new variant was derived from human and animal viruses by genetic reassortment in the pig, supporting the concept that this animal is the mixing vessel for the generation of new human influenza viruses. Although it is generally believed that the 2009 outbreak was mild, there have been severe cases particularly among the young and the middle-aged. Pathogenicity and host range are determined to a large extent by the polymerase, the haemagglutinin and the NS1 protein of influenza A viruses. There is evidence that mutations of these proteins may change the pathogenicity of the new virus.</div>
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