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Increase in viral gastroenteritis outbreaks in Europe and epidemic spread of new norovirus variant

Identifieur interne : 004B09 ( PascalFrancis/Checkpoint ); précédent : 004B08; suivant : 004B10

Increase in viral gastroenteritis outbreaks in Europe and epidemic spread of new norovirus variant

Auteurs : Carl Kirkwood [Australie, Royaume-Uni, Pays-Bas, France, Espagne, Allemagne, Danemark, Suède, Slovénie, Hongrie] ; Ben Lopman ; Harry Vennema ; Evelyne Kohli ; Pierre Pothier ; Alicia Sanchez ; Anabel Negredo ; Javier Buesa ; Eckart Schreier ; Mark Reacher ; David Brown ; Jim Gray ; Miren Iturriza ; Chris Gallimore ; Blenda Bottiger ; Kjell-Olof Hedlund ; Maria Torven ; Carl-Henrik Von Bonsdorff ; Leena Maunula ; Mateja Poljsak-Prijatelj ; Janet Zimsek ; Gabor Reuter ; György Szücs ; Béla Melegh ; Lennart Svennson ; Yvonne Van Duijnhoven

Source :

RBID : Pascal:04-0252274

Descripteurs français

English descriptors

Abstract

Background Highly publicised outbreaks of norovirus gastroenteritis in hospitals in the UK and Ireland and cruise ships in the USA sparked speculation about whether this reported activity was unusual. Methods We analysed data collected through a collaborative research and surveillance network of viral gastroenteritis in ten European countries (England and Wales were analysed as one region). We compiled data on total number of outbreaks by month, and compared genetic sequences from the isolated viruses. Data were compared with historic data from a systematic retrospective review of surveillance systems and with a central database of viral sequences. Findings Three regions (England and Wales, Germany, and the Netherlands) had sustained epidemiological and viral characterisation data from 1995 to 2002. In all three, we noted a striking increase in norovirus outbreaks in 2002 that coincided with the detection and emergence of a new predominant norovirus variant of genogroup 114, which had a consistent mutation in the polymerase gene. Eight of nine regions had an annual peak in 2002 and the new genogroup 114 variant was detected in nine countries. Also, the detection of the new variant preceded an atypical spring and summer peak of outbreaks in three countries. Interpretation Our data from ten European countries show a striking increase and unusual seasonal pattern of norovirus gastroenteritis in 2002 that occurred concurrently with the emergence of a novel genetic variant. In addition to showing the added value of an international network for viral gastroenteritis outbreaks, these observations raise questions about the biological properties of the variant and the mechanisms for its rapid dissemination.


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Pascal:04-0252274

Le document en format XML

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<name sortKey="Von Bonsdorff, Carl Henrik" sort="Von Bonsdorff, Carl Henrik" uniqKey="Von Bonsdorff C" first="Carl-Henrik" last="Von Bonsdorff">Carl-Henrik Von Bonsdorff</name>
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<name sortKey="Van Duijnhoven, Yvonne" sort="Van Duijnhoven, Yvonne" uniqKey="Van Duijnhoven Y" first="Yvonne" last="Van Duijnhoven">Yvonne Van Duijnhoven</name>
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<div type="abstract" xml:lang="en">Background Highly publicised outbreaks of norovirus gastroenteritis in hospitals in the UK and Ireland and cruise ships in the USA sparked speculation about whether this reported activity was unusual. Methods We analysed data collected through a collaborative research and surveillance network of viral gastroenteritis in ten European countries (England and Wales were analysed as one region). We compiled data on total number of outbreaks by month, and compared genetic sequences from the isolated viruses. Data were compared with historic data from a systematic retrospective review of surveillance systems and with a central database of viral sequences. Findings Three regions (England and Wales, Germany, and the Netherlands) had sustained epidemiological and viral characterisation data from 1995 to 2002. In all three, we noted a striking increase in norovirus outbreaks in 2002 that coincided with the detection and emergence of a new predominant norovirus variant of genogroup 114, which had a consistent mutation in the polymerase gene. Eight of nine regions had an annual peak in 2002 and the new genogroup 114 variant was detected in nine countries. Also, the detection of the new variant preceded an atypical spring and summer peak of outbreaks in three countries. Interpretation Our data from ten European countries show a striking increase and unusual seasonal pattern of norovirus gastroenteritis in 2002 that occurred concurrently with the emergence of a novel genetic variant. In addition to showing the added value of an international network for viral gastroenteritis outbreaks, these observations raise questions about the biological properties of the variant and the mechanisms for its rapid dissemination.</div>
</front>
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<s1>Laboratoire de Virologie</s1>
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<s1>Instituto de Salud Carlos III</s1>
<s2>Madrid</s2>
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<fA14 i1="06">
<s1>University of Valencia</s1>
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<s2>Berlin</s2>
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<s1>University of Linköping</s1>
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<s1>P</s1>
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<s0>A</s0>
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<s0>Background Highly publicised outbreaks of norovirus gastroenteritis in hospitals in the UK and Ireland and cruise ships in the USA sparked speculation about whether this reported activity was unusual. Methods We analysed data collected through a collaborative research and surveillance network of viral gastroenteritis in ten European countries (England and Wales were analysed as one region). We compiled data on total number of outbreaks by month, and compared genetic sequences from the isolated viruses. Data were compared with historic data from a systematic retrospective review of surveillance systems and with a central database of viral sequences. Findings Three regions (England and Wales, Germany, and the Netherlands) had sustained epidemiological and viral characterisation data from 1995 to 2002. In all three, we noted a striking increase in norovirus outbreaks in 2002 that coincided with the detection and emergence of a new predominant norovirus variant of genogroup 114, which had a consistent mutation in the polymerase gene. Eight of nine regions had an annual peak in 2002 and the new genogroup 114 variant was detected in nine countries. Also, the detection of the new variant preceded an atypical spring and summer peak of outbreaks in three countries. Interpretation Our data from ten European countries show a striking increase and unusual seasonal pattern of norovirus gastroenteritis in 2002 that occurred concurrently with the emergence of a novel genetic variant. In addition to showing the added value of an international network for viral gastroenteritis outbreaks, these observations raise questions about the biological properties of the variant and the mechanisms for its rapid dissemination.</s0>
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<li>Hongrie</li>
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<name sortKey="Kirkwood, Carl" sort="Kirkwood, Carl" uniqKey="Kirkwood C" first="Carl" last="Kirkwood">Carl Kirkwood</name>
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<name sortKey="Kirkwood, Carl" sort="Kirkwood, Carl" uniqKey="Kirkwood C" first="Carl" last="Kirkwood">Carl Kirkwood</name>
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<country name="Allemagne">
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<name sortKey="Kirkwood, Carl" sort="Kirkwood, Carl" uniqKey="Kirkwood C" first="Carl" last="Kirkwood">Carl Kirkwood</name>
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<country name="Danemark">
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<name sortKey="Kirkwood, Carl" sort="Kirkwood, Carl" uniqKey="Kirkwood C" first="Carl" last="Kirkwood">Carl Kirkwood</name>
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<country name="Suède">
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