Australian Influenza Surveillance Report No 03 – 20 June to 03 July 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: 10 July 2015

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, with updates also provided during the season. A more in-depth end-of-season report is also published in Communicable Diseases Intelligence journal.

Australian Influenza Surveillance Report No 03 - 20 June to 03 July 2015


  • The annual increase in influenza activity has begun.
  • Influenza notifications are higher compared with the same time in previous years. However, the overall scale and clinical severity of this year’s influenza season will become apparent as the season progresses.
  • Influenza notification rates have been highest among those aged over 85 years with a secondary peak in those aged between 5 and 9 years.
  • Influenza B has been circulating at increasing levels nationally and is the predominant influenza virus type circulating in the most recent fortnight.
  • Influenza associated hospitalisations to sentinel sites have increased in the recent fortnight, with less than 10% of patients admitted directly to ICU. The majority of hospital admissions have been associated with influenza B infections.
  • Systems that monitor influenza-like illness (ILI) are reporting variable ILI activity which is not unusual at this point in the season. Influenza viruses are increasingly causing ILI in the community, with other respiratory viruses like Rhinovirus and RSV circulating at similar levels.
  • The seasonal influenza vaccines appear to be a good match for circulating strains.

Full Report

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Previous Reports and Updates

Annual Reports

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Should you encounter issues in accessing the information contained either on this webpage or within the downloadable full reports please email flu ( or contact the Department of Health switchboard on 02 6289 1555 or 1800 020 103.

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