Cargando…

Emergency surveillance of influenza during 2009 in the Chinese city of Qingdao

Please cite this paper as: Wang et al. (2010) Emergency surveillance of influenza during 2009 in the Chinese city of Qingdao. Influenza and Other Respiratory Viruses 5(1), 53–59. Background  In April, 2009, a new influenza pandemic caused by a swine‐origin H1N1 subtype influenza virus was imminent....

Descripción completa

Detalles Bibliográficos
Autores principales: Wang, Zhao‐Guo, Yi, Ying, Yang, Ting‐Ting, Liu, Xiao‐Lin, Jiang, Fa‐Chun, Wang, Zhi‐Yu, Chen, Ji‐Ming
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Blackwell Publishing Ltd 2010
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4986578/
https://www.ncbi.nlm.nih.gov/pubmed/21138541
http://dx.doi.org/10.1111/j.1750-2659.2010.00159.x
_version_ 1782448214498082816
author Wang, Zhao‐Guo
Yi, Ying
Yang, Ting‐Ting
Liu, Xiao‐Lin
Jiang, Fa‐Chun
Wang, Zhi‐Yu
Chen, Ji‐Ming
author_facet Wang, Zhao‐Guo
Yi, Ying
Yang, Ting‐Ting
Liu, Xiao‐Lin
Jiang, Fa‐Chun
Wang, Zhi‐Yu
Chen, Ji‐Ming
author_sort Wang, Zhao‐Guo
collection PubMed
description Please cite this paper as: Wang et al. (2010) Emergency surveillance of influenza during 2009 in the Chinese city of Qingdao. Influenza and Other Respiratory Viruses 5(1), 53–59. Background  In April, 2009, a new influenza pandemic caused by a swine‐origin H1N1 subtype influenza virus was imminent. We thereby carried out an emergency surveillance study in a Chinese city of Qingdao. Methods  Pharyngeal swab samples were collected from four targeted groups and tested by reverse‐transcription polymerase chain reaction. Each laboratory‐confirmed pandemic H1N1 case or cluster was investigated, and the hemagglutinin genes of some of the viruses were sequenced and analyzed. Results  A total of 140 pandemic H1N1 cases including 92 from 7 clusters were identified in the four targeted groups. None of them developed into severe infections. Meanwhile, 103 cases of seasonal influenza (98 H3N2 and 5 H1N1) and 10 clusters of seasonal H3N2 influenza were also identified. Among them, 38 pandemic H1N1 and two seasonal H3N2 influenza cases were air travellers, suggesting that air travel facilitates the spread of pandemic and seasonal influenza even in the northern hemisphere summer. In addition, it was found that pandemic H1N1 and seasonal H3N2 influenza viruses co‐circulated in two clusters. No significant mutations were found in the hemagglutinin gene sequences of pandemic H1N1 viruses, but the seasonal H3N2 influenza viruses have become genetically distinguishable from those circulating in 2007–2008.
format Online
Article
Text
id pubmed-4986578
institution National Center for Biotechnology Information
language English
publishDate 2010
publisher Blackwell Publishing Ltd
record_format MEDLINE/PubMed
spelling pubmed-49865782016-09-07 Emergency surveillance of influenza during 2009 in the Chinese city of Qingdao Wang, Zhao‐Guo Yi, Ying Yang, Ting‐Ting Liu, Xiao‐Lin Jiang, Fa‐Chun Wang, Zhi‐Yu Chen, Ji‐Ming Influenza Other Respir Viruses Original Articles Please cite this paper as: Wang et al. (2010) Emergency surveillance of influenza during 2009 in the Chinese city of Qingdao. Influenza and Other Respiratory Viruses 5(1), 53–59. Background  In April, 2009, a new influenza pandemic caused by a swine‐origin H1N1 subtype influenza virus was imminent. We thereby carried out an emergency surveillance study in a Chinese city of Qingdao. Methods  Pharyngeal swab samples were collected from four targeted groups and tested by reverse‐transcription polymerase chain reaction. Each laboratory‐confirmed pandemic H1N1 case or cluster was investigated, and the hemagglutinin genes of some of the viruses were sequenced and analyzed. Results  A total of 140 pandemic H1N1 cases including 92 from 7 clusters were identified in the four targeted groups. None of them developed into severe infections. Meanwhile, 103 cases of seasonal influenza (98 H3N2 and 5 H1N1) and 10 clusters of seasonal H3N2 influenza were also identified. Among them, 38 pandemic H1N1 and two seasonal H3N2 influenza cases were air travellers, suggesting that air travel facilitates the spread of pandemic and seasonal influenza even in the northern hemisphere summer. In addition, it was found that pandemic H1N1 and seasonal H3N2 influenza viruses co‐circulated in two clusters. No significant mutations were found in the hemagglutinin gene sequences of pandemic H1N1 viruses, but the seasonal H3N2 influenza viruses have become genetically distinguishable from those circulating in 2007–2008. Blackwell Publishing Ltd 2010-08-23 2011-01 /pmc/articles/PMC4986578/ /pubmed/21138541 http://dx.doi.org/10.1111/j.1750-2659.2010.00159.x Text en © 2010 Blackwell Publishing Ltd
spellingShingle Original Articles
Wang, Zhao‐Guo
Yi, Ying
Yang, Ting‐Ting
Liu, Xiao‐Lin
Jiang, Fa‐Chun
Wang, Zhi‐Yu
Chen, Ji‐Ming
Emergency surveillance of influenza during 2009 in the Chinese city of Qingdao
title Emergency surveillance of influenza during 2009 in the Chinese city of Qingdao
title_full Emergency surveillance of influenza during 2009 in the Chinese city of Qingdao
title_fullStr Emergency surveillance of influenza during 2009 in the Chinese city of Qingdao
title_full_unstemmed Emergency surveillance of influenza during 2009 in the Chinese city of Qingdao
title_short Emergency surveillance of influenza during 2009 in the Chinese city of Qingdao
title_sort emergency surveillance of influenza during 2009 in the chinese city of qingdao
topic Original Articles
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4986578/
https://www.ncbi.nlm.nih.gov/pubmed/21138541
http://dx.doi.org/10.1111/j.1750-2659.2010.00159.x
work_keys_str_mv AT wangzhaoguo emergencysurveillanceofinfluenzaduring2009inthechinesecityofqingdao
AT yiying emergencysurveillanceofinfluenzaduring2009inthechinesecityofqingdao
AT yangtingting emergencysurveillanceofinfluenzaduring2009inthechinesecityofqingdao
AT liuxiaolin emergencysurveillanceofinfluenzaduring2009inthechinesecityofqingdao
AT jiangfachun emergencysurveillanceofinfluenzaduring2009inthechinesecityofqingdao
AT wangzhiyu emergencysurveillanceofinfluenzaduring2009inthechinesecityofqingdao
AT chenjiming emergencysurveillanceofinfluenzaduring2009inthechinesecityofqingdao