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Determination of Predominance of Influenza Virus Strains in the Americas - Volume 21, Number 7—July 2015 - Emerging Infectious Disease journal - CDC

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Determination of Predominance of Influenza Virus Strains in the Americas - Volume 21, Number 7—July 2015 - Emerging Infectious Disease journal - CDC





Volume 21, Number 7—July 2015

Dispatch

Determination of Predominance of Influenza Virus Strains in the Americas

Eduardo Azziz-BaumgartnerComments to Author , Rebecca J. Garten, Rakhee Palekar, Mauricio Cerpa, Sara Mirza, Alba Maria Ropero, Francisco S. Palomeque, Ann Moen, Joseph Bresee, Michael Shaw, and Marc-Alain Widdowson
Author affiliations: Centers for Disease Control and Prevention, Atlanta, Georgia, USA (E. Azziz-Baumgartner, R.J. Garten, R. Palekar, S. Mirza, F.S. Palomeque, A. Moen, J. Bresee, M. Shaw, M.-A. Widdowson)Pan American Health Organization, Washington, DC, USA (R. Palekar, M. Cerpa, A.M. Ropero)

Abstract

During 2001–2014, predominant influenza A(H1N1) and A(H3N2) strains in South America predominated in all or most subsequent influenza seasons in Central and North America. Predominant A(H1N1) and A(H3N2) strains in North America predominated in most subsequent seasons in Central and South America. Sharing data between these subregions may improve influenza season preparedness.
During 2002–2008, infection with influenza viruses caused 40,880–160,270 deaths each year throughout the Americas (1). To prevent illness and death, medical staff in 35 countries throughout the Americas administer influenza vaccines (2). However, producing the vaccine takes ≈6 months, and selecting virus strains necessitates assessing which strains are likely to predominate during upcoming epidemics (3).
Surveillance for influenza has improved dramatically, especially in the American tropics (4). Nevertheless, it remains unclear whether virus strains identified in North America subsequently become predominant in South America and vice versa (3). Such information could help public health officials in each hemisphere prepare for upcoming influenza seasons. We describe influenza epidemics in North, Central, and South America and explore whether the virus strains that caused them were similar.
Dr. Azziz-Baumgartner works at the US Centers for Disease Control, Influenza Division, collaborating with the Pan American Health Organization and its member countries. His research interests are surveillance improvements, disease and economic burden studies, and influenza vaccine impact studies.

Acknowledgment

This paper is dedicated to the memory of Alexander Klimov.

References

  1. Cheng PYPalekar RAzziz-Baumgartner EIuliano DAlencar AP , Bresee J, Burden of influenza-associated deaths in the Americas, 2002–2008. Influenza Other Respir Viruses. In press 2015.
  2. Ropero-Álvarez AMKurtis HJDanovaro-Holliday MCRuiz-Matus CAndrus JKExpansion of seasonal influenza vaccination in the Americas. BMC Public Health2009;9:361DOIPubMed
  3. Russell CAJones TCBarr IGCox NJGarten RJGregory V, et alInfluenza vaccine strain selection and recent studies on the global migration of seasonal influenza viruses. Vaccine2008;26(Suppl 4):D314DOIPubMed
  4. Johnson LClará WGambhir MChacón-Fuentes RMarín-Correa CJara JImprovements in pandemic preparedness in 8 Central American countries, 2008–2012. BMC Health Serv Res2014;14:209DOIPubMed
  5. World Health Organization. Global Influenza Surveillance and Response System (GISRS) [cited 2013 May 26].http://www.who.int/influenza/gisrs_laboratory/en/
  6. United Nations, Department of Economic and Social Affairs. World population prospects: the 2010 revision [cited 2015 May 5]. http://esa.un.org/Wpp/Documentation/WPP%202010%20publications.htm
  7. Azziz Baumgartner EDao CNNasreen SBhuiyan MU, Mah-E-Muneer S, Al Mamun A, et al. Seasonality, timing, and climate drivers of influenza activity worldwide. J Infect Dis2012;206:83846DOIPubMed
  8. Secretaria de Vigilância em Saúde. Ministério da Saúde. Influenza: monitoramento até a semana epidemiológica 29 de 2013. Boletim Epidemiológico.2013;44:1–9.

Tables

Technical Appendix

Suggested citation for this article: Azziz-Baumgartner E, Garten RJ, Palekar R, Cerpa M, Mirza S, Ropero AM, et al. Determination of predominance of influenza virus strains in the Americas. Emerg Infect Dis. 2015 Jul [date cited]. http://dx.doi.org/10.3201/eid2107.140788
DOI: 10.3201/eid2107.140788

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