PandemieGrippaleV1, Main, Exploration, bibRecord, 001127

Antigenic and genomic characterization of human influenza A and B viruses circulating in Argentina after the introduction of influenza A(H1N1)pdm09

Identifieur interne : 001127 ( Main/Exploration ); précédent : 001126; suivant : 001128

Antigenic and genomic characterization of human influenza A and B viruses circulating in Argentina after the introduction of influenza A(H1N1)pdm09

Auteurs : Mara L. Russo [Argentine] ; Andrea V. Pontoriero [Argentine] ; Estefania Benedetti [Argentine] ; Andrea Czech [Argentine] ; Martin Avaro [Argentine] ; Natalia Periolo [Argentine] ; Ana M. Campos [Argentine] ; Vilma L. Savy [Argentine] ; Elsa G. Baumeister [Argentine]

Source :

Journal of medical microbiology [ 0022-2615 ] ; 2014.

RBID : Pascal:15-0021923

Descripteurs français

Pascal (Inist)
- Homme, Virus grippal A, Génomique, Argentine, Grippe A.
Wicri :
- geographic : Argentine.
- topic : Homme.

English descriptors

KwdEn :
- Argentina, Genomics, Human, Influenza A, Influenza A virus.

Abstract

This study was conducted as part of the Argentinean Influenza and other Respiratory Viruses Surveillance Network, in the context of the Global Influenza Surveillance carried out by the World Health Organization (WHO). The objective was to study the activity and the antigenic and genomic characteristics of circulating viruses for three consecutive seasons (2010, 2011 and 2012) in order to investigate the emergence of influenza viral variants. During the study period, influenza virus circulation was detected from January to December. Influenza A and B, and all current subtypes of human influenza viruses, were present each year. Throughout the 2010 post-pandemic season, influenza A(H1N1)pdm09, unexpectedly, almost disappeared. The haemagglutinin (HA) of the A(H1N1)pdm09 viruses studied were segregated in a different genetic group to those identified during the 2009 pandemic, although they were still antigenically closely related to the vaccine strain A/California/07/2009. Influenza A(H3N2) viruses were the predominant strains circulating during the 2011 season, accounting for nearly 76% of influenza viruses identified. That year, all HA sequences of the A(H3N2) viruses tested fell into the A/ Victoria/208/2009 genetic clade, but remained antigenically related to A/Perth/16/2009 (reference vaccine recommended for this three-year period). A(H3N2) viruses isolated in 2012 were antigenically closely related to A/Victoria/361/2011, recommended by the WHO as the H3 component for the 2013 Southern Hemisphere formulation. B viruses belonging to the B/Victoria lineage circulated in 2010. A mixed circulation of viral variants of both B/Victoria and B/Yamagata lineages was detected in 2012, with the former being predominant. A(H1N1)pdm09 viruses remained antigenically closely related to the vaccine virus A/California/7/2009; A(H3N2) viruses continually evolved into new antigenic clusters and both B lineages, B/Victoria/2/87-like and B/ Yamagata/16/88-like viruses, were observed during the study period. The virological surveillance showed that the majority of the circulating strains during the study period were antigenically related to the corresponding Southern Hemisphere vaccine strains except for the 2012 A(H3N2) viruses.

Affiliations:

Argentine

Links toward previous steps (curation, corpus...)

to stream PascalFrancis, to step Corpus: 000005
to stream PascalFrancis, to step Curation: 001E14
to stream PascalFrancis, to step Checkpoint: 000136
to stream Main, to step Merge: 001137
to stream Main, to step Curation: 001127

Le document en format XML

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<front><div type="abstract" xml:lang="en">This study was conducted as part of the Argentinean Influenza and other Respiratory Viruses Surveillance Network, in the context of the Global Influenza Surveillance carried out by the World Health Organization (WHO). The objective was to study the activity and the antigenic and genomic characteristics of circulating viruses for three consecutive seasons (2010, 2011 and 2012) in order to investigate the emergence of influenza viral variants. During the study period, influenza virus circulation was detected from January to December. Influenza A and B, and all current subtypes of human influenza viruses, were present each year. Throughout the 2010 post-pandemic season, influenza A(H1N1)pdm09, unexpectedly, almost disappeared. The haemagglutinin (HA) of the A(H1N1)pdm09 viruses studied were segregated in a different genetic group to those identified during the 2009 pandemic, although they were still antigenically closely related to the vaccine strain A/California/07/2009. Influenza A(H3N2) viruses were the predominant strains circulating during the 2011 season, accounting for nearly 76% of influenza viruses identified. That year, all HA sequences of the A(H3N2) viruses tested fell into the A/ Victoria/208/2009 genetic clade, but remained antigenically related to A/Perth/16/2009 (reference vaccine recommended for this three-year period). A(H3N2) viruses isolated in 2012 were antigenically closely related to A/Victoria/361/2011, recommended by the WHO as the H3 component for the 2013 Southern Hemisphere formulation. B viruses belonging to the B/Victoria lineage circulated in 2010. A mixed circulation of viral variants of both B/Victoria and B/Yamagata lineages was detected in 2012, with the former being predominant. A(H1N1)pdm09 viruses remained antigenically closely related to the vaccine virus A/California/7/2009; A(H3N2) viruses continually evolved into new antigenic clusters and both B lineages, B/Victoria/2/87-like and B/ Yamagata/16/88-like viruses, were observed during the study period. The virological surveillance showed that the majority of the circulating strains during the study period were antigenically related to the corresponding Southern Hemisphere vaccine strains except for the 2012 A(H3N2) viruses.</div>
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<tree><country name="Argentine"><noRegion><name sortKey="Russo, Mara L" sort="Russo, Mara L" uniqKey="Russo M" first="Mara L." last="Russo">Mara L. Russo</name>
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<name sortKey="Avaro, Martin" sort="Avaro, Martin" uniqKey="Avaro M" first="Martin" last="Avaro">Martin Avaro</name>
<name sortKey="Baumeister, Elsa G" sort="Baumeister, Elsa G" uniqKey="Baumeister E" first="Elsa G." last="Baumeister">Elsa G. Baumeister</name>
<name sortKey="Benedetti, Estefania" sort="Benedetti, Estefania" uniqKey="Benedetti E" first="Estefania" last="Benedetti">Estefania Benedetti</name>
<name sortKey="Campos, Ana M" sort="Campos, Ana M" uniqKey="Campos A" first="Ana M." last="Campos">Ana M. Campos</name>
<name sortKey="Czech, Andrea" sort="Czech, Andrea" uniqKey="Czech A" first="Andrea" last="Czech">Andrea Czech</name>
<name sortKey="Periolo, Natalia" sort="Periolo, Natalia" uniqKey="Periolo N" first="Natalia" last="Periolo">Natalia Periolo</name>
<name sortKey="Pontoriero, Andrea V" sort="Pontoriero, Andrea V" uniqKey="Pontoriero A" first="Andrea V." last="Pontoriero">Andrea V. Pontoriero</name>
<name sortKey="Savy, Vilma L" sort="Savy, Vilma L" uniqKey="Savy V" first="Vilma L." last="Savy">Vilma L. Savy</name>
</country>
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</affiliations>
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   |texte=   Antigenic and genomic characterization of human influenza A and B viruses circulating in Argentina after the introduction of influenza A(H1N1)pdm09
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	Serveur d'exploration sur les pandémies grippales
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Antigenic and genomic characterization of human influenza A and B viruses circulating in Argentina after the introduction of influenza A(H1N1)pdm09

Antigenic and genomic characterization of human influenza A and B viruses circulating in Argentina after the introduction of influenza A(H1N1)pdm09

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