Global patterns in seasonal activity of influenza A/H3N2, A/H1N1, and B from 1997 to 2005

Viral coexistence and latitudinal gradients

Brian S. Finkelman, Cécile Viboud, Katia Koelle, Matthew Joseph Ferrari, Nita Bharti, Bryan T. Grenfell

Research output: Contribution to journalArticle

134 Citations (Scopus)

Abstract

Despite a mass of research on the epidemiology of seasonal influenza, overall patterns of infection have not been fully described on broad geographic scales and for specific types and subtypes of the influenza virus. Here we provide a descriptive analysis of laboratory-confirmed influenza surveillance data by type and subtype (A/H3N2, A/H1N1, and B) for 19 temperate countries in the Northern and Southern hemispheres from 1997 to 2005, compiled from a public database maintained by WHO (FluNet). Key findings include patterns of large scale co-occurrence of influenza type A and B, interhemispheric synchrony for subtype A/H3N2, and latitudinal gradients in epidemic timing for type A. These findings highlight the need for more countries to conduct year-round viral surveillance and report reliable incidence data at the type and subtype level, especially in the Tropics.

Original languageEnglish (US)
Article numbere1296
JournalPloS one
Volume2
Issue number12
DOIs
StatePublished - Dec 12 2007

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Tropics
Epidemiology
Viruses
influenza
Human Influenza
monitoring
Orthomyxoviridae
epidemiology
tropics
Databases
incidence
Incidence
Infection
Research
infection

All Science Journal Classification (ASJC) codes

  • Biochemistry, Genetics and Molecular Biology(all)
  • Agricultural and Biological Sciences(all)

Cite this

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Global patterns in seasonal activity of influenza A/H3N2, A/H1N1, and B from 1997 to 2005 : Viral coexistence and latitudinal gradients. / Finkelman, Brian S.; Viboud, Cécile; Koelle, Katia; Ferrari, Matthew Joseph; Bharti, Nita; Grenfell, Bryan T.

In: PloS one, Vol. 2, No. 12, e1296, 12.12.2007.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Global patterns in seasonal activity of influenza A/H3N2, A/H1N1, and B from 1997 to 2005

T2 - Viral coexistence and latitudinal gradients

AU - Finkelman, Brian S.

AU - Viboud, Cécile

AU - Koelle, Katia

AU - Ferrari, Matthew Joseph

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AU - Grenfell, Bryan T.

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AB - Despite a mass of research on the epidemiology of seasonal influenza, overall patterns of infection have not been fully described on broad geographic scales and for specific types and subtypes of the influenza virus. Here we provide a descriptive analysis of laboratory-confirmed influenza surveillance data by type and subtype (A/H3N2, A/H1N1, and B) for 19 temperate countries in the Northern and Southern hemispheres from 1997 to 2005, compiled from a public database maintained by WHO (FluNet). Key findings include patterns of large scale co-occurrence of influenza type A and B, interhemispheric synchrony for subtype A/H3N2, and latitudinal gradients in epidemic timing for type A. These findings highlight the need for more countries to conduct year-round viral surveillance and report reliable incidence data at the type and subtype level, especially in the Tropics.

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