Australian Influenza Activity Update – week ending 27 March 2015 (#01/2015)

The Australian Influenza Surveillance Report and Activity Updates are compiled from a number of data sources, which are used to monitor influenza activity and severity in the community. These data sources include laboratory-confirmed notifications to NNDSS; influenza associated hospitalisations; sentinel influenza-like illness (ILI) reporting from general practitioners and emergency departments; ILI-related call centre calls and community level surveys; and sentinel laboratory testing results.

Page last updated: 12 September 2013

The Australian Influenza Surveillance Report is published on a fortnightly basis during the influenza season, typically between May and October. Influenza activity updates will be published outside of the seasonal period. A more in-depth end-of-season report is also published in Communicable Diseases Intelligence journal.

Australian Influenza Activity Update - week ending 27 March 2015

  • Australia is currently in the inter-seasonal period for influenza, with overall influenza activity at low levels but showing some increase.
  • Influenza activity across jurisdictions is variable, with activity in eastern seaboard states and South Australia at levels higher than the same time last year.
  • Nationally, influenza A is the predominant circulating virus type; of those viruses where subtyping data are available, influenza A(H3N2) is most common.
  • The majority of influenza viruses circulating in Australia appear to be a good match with the 2015 seasonal influenza vaccine.
  • Influenza-like illness (ILI) levels detected through the sentinel GP ILI surveillance system remains low. Currently, rhinovirus infection is the most common cause of ILI detected.

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