Article: A two-year surveillance of 2009 pandemic influenza A (H1N1) in Guangzhou, China: from pandemic to seasonal influenza?
| Title | A two-year surveillance of 2009 pandemic influenza A (H1N1) in Guangzhou, China: from pandemic to seasonal influenza? | ||||||
|---|---|---|---|---|---|---|---|
| Authors | Li, T1 Fu, C1 Di, B1 Wu, J1 Yang, Z1 Wang, Y1 Li, M1 Lu, J1 Chen, Y1 Lu, E1 Geng, J1 Hu, W1 Dong, Z1 Li, MF3 Zheng, BJ2 Cao, KY3 Wang, M1 | ||||||
| Issue Date | 2011 | ||||||
| Publisher | Public Library of Science. The Journal's web site is located at http://www.plosone.org/home.action | ||||||
| Citation | PLoS One, 2011, v. 6 n. 11, article no. e28027 [How to Cite?] DOI: http://dx.doi.org/10.1371/journal.pone.0028027 | ||||||
| Abstract | In this two-years surveillance of 2009 pandemic influenza A (H1N1) (pH1N1) in Guangzhou, China, we reported here that the scale and duration of pH1N1 outbreaks, severe disease and fatality rates of pH1N1 patients were significantly lower or shorter in the second epidemic year (May 2010-April 2011) than those in the first epidemic year (May 2009-April 2010) (P<0.05), but similar to those of seasonal influenza (P>0.05). Similar to seasonal influenza, pre-existing chronic pulmonary diseases was a risk factor associated with fatal cases of pH1N1 influenza. Different from seasonal influenza, which occurred in spring/summer seasons annually, pH1N1 influenza mainly occurred in autumn/winter seasons in the first epidemic year, but prolonged to winter/spring season in the second epidemic year. The information suggests a tendency that the epidemics of pH1N1 influenza may probably further shift to spring/summer seasons and become a predominant subtype of seasonal influenza in coming years in Guangzhou, China. | ||||||
| ISSN | 1932-6203 2011 Impact Factor: 4.092 2011 SCImago Journal Rankings: 0.519 | ||||||
| DOI | http://dx.doi.org/10.1371/journal.pone.0028027 | ||||||
| ISI Accession Number ID | WOS:000297789200053
Funding Information: This study was supported by Science and Information Technology of Guangzhou (grant number 2010YIC09), and the Ministry of Science and Technology of the People's Republic of China (grant number 2009ZX10004-306 and 2009ZX10004-213). The funders had no role in study design, data collection and analysis, decision to publish, or preparation of the manuscript. | ||||||
| PubMed Central ID | PMC3220710 | ||||||
| References | References in Scopus |
| dc.contributor.author | Li, T | ||||||
|---|---|---|---|---|---|---|---|
| dc.contributor.author | Fu, C | ||||||
| dc.contributor.author | Di, B | ||||||
| dc.contributor.author | Wu, J | ||||||
| dc.contributor.author | Yang, Z | ||||||
| dc.contributor.author | Wang, Y | ||||||
| dc.contributor.author | Li, M | ||||||
| dc.contributor.author | Lu, J | ||||||
| dc.contributor.author | Chen, Y | ||||||
| dc.contributor.author | Lu, E | ||||||
| dc.contributor.author | Geng, J | ||||||
| dc.contributor.author | Hu, W | ||||||
| dc.contributor.author | Dong, Z | ||||||
| dc.contributor.author | Li, MF | ||||||
| dc.contributor.author | Zheng, BJ | ||||||
| dc.contributor.author | Cao, KY | ||||||
| dc.contributor.author | Wang, M | ||||||
| dc.date.accessioned | 2012-08-08T08:52:00Z | ||||||
| dc.date.available | 2012-08-08T08:52:00Z | ||||||
| dc.date.issued | 2011 | ||||||
| dc.description.abstract | In this two-years surveillance of 2009 pandemic influenza A (H1N1) (pH1N1) in Guangzhou, China, we reported here that the scale and duration of pH1N1 outbreaks, severe disease and fatality rates of pH1N1 patients were significantly lower or shorter in the second epidemic year (May 2010-April 2011) than those in the first epidemic year (May 2009-April 2010) (P<0.05), but similar to those of seasonal influenza (P>0.05). Similar to seasonal influenza, pre-existing chronic pulmonary diseases was a risk factor associated with fatal cases of pH1N1 influenza. Different from seasonal influenza, which occurred in spring/summer seasons annually, pH1N1 influenza mainly occurred in autumn/winter seasons in the first epidemic year, but prolonged to winter/spring season in the second epidemic year. The information suggests a tendency that the epidemics of pH1N1 influenza may probably further shift to spring/summer seasons and become a predominant subtype of seasonal influenza in coming years in Guangzhou, China. | ||||||
| dc.description.nature | published_or_final_version | ||||||
| dc.identifier.citation | PLoS One, 2011, v. 6 n. 11, article no. e28027 [How to Cite?] DOI: http://dx.doi.org/10.1371/journal.pone.0028027 | ||||||
| dc.identifier.doi | http://dx.doi.org/10.1371/journal.pone.0028027 | ||||||
| dc.identifier.hkuros | 203922 | ||||||
| dc.identifier.isi | WOS:000297789200053
Funding Information: This study was supported by Science and Information Technology of Guangzhou (grant number 2010YIC09), and the Ministry of Science and Technology of the People's Republic of China (grant number 2009ZX10004-306 and 2009ZX10004-213). The funders had no role in study design, data collection and analysis, decision to publish, or preparation of the manuscript. | ||||||
| dc.identifier.issn | 1932-6203 2011 Impact Factor: 4.092 2011 SCImago Journal Rankings: 0.519 | ||||||
| dc.identifier.issue | 11, article no. e28027 | ||||||
| dc.identifier.pmcid | PMC3220710 | ||||||
| dc.identifier.pmid | 22125653 | ||||||
| dc.identifier.scopus | eid_2-s2.0-81355136066 | ||||||
| dc.identifier.uri | http://hdl.handle.net/10722/157657 | ||||||
| dc.identifier.volume | 6 | ||||||
| dc.language | eng | ||||||
| dc.publisher | Public Library of Science. The Journal's web site is located at http://www.plosone.org/home.action | ||||||
| dc.publisher.place | United States | ||||||
| dc.relation.ispartof | PLoS One | ||||||
| dc.relation.references | References in Scopus | ||||||
| dc.rights | Creative Commons: Attribution 3.0 Hong Kong License | ||||||
| dc.subject.mesh | China - epidemiology | ||||||
| dc.subject.mesh | Influenza A Virus, H1N1 Subtype - isolation and purification | ||||||
| dc.subject.mesh | Influenza, Human - epidemiology - virology | ||||||
| dc.subject.mesh | Pandemics | ||||||
| dc.subject.mesh | Sentinel Surveillance | ||||||
| dc.title | A two-year surveillance of 2009 pandemic influenza A (H1N1) in Guangzhou, China: from pandemic to seasonal influenza? | ||||||
| dc.type | Article |
Author Affiliations
- Guangdong Center for Disease Control and Prevention
- The University of Hong Kong
- Sun Yat-Sen University