Australian Influenza Surveillance Report and Activity Updates

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 August 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 06 - 1 August to 14 August 2015

Summary

  • Influenza activity continued to increase nationally this fortnight. All jurisdictions with the exception of Western Australia are continuing to increase in activity.
  • Influenza notification rates have been highest among those aged between 5 and 9 and over 85 years with a secondary peak in those aged 40-44 years.
  • Influenza B continues to be the dominant influenza virus type nationally, comprising two thirds of all notifications. In South Australia, Victoria and Western Australia, the proportion of influenza A has increased.
  • All systems that monitor influenza-like illness (ILI) activity are reporting increasing activity while remaining within the range of previous seasons. Influenza is the primary cause of ILI in the community this fortnight.
  • Hospitalisations with confirmed influenza increased in the past fortnight. While less severe overall, presentations appear to be more severe in children this year, with 11% of children presenting to sentinel hospitals with influenza admitted directly to ICU compared with 6% of adults.
  • The seasonal influenza vaccines appear to be a good match for circulating strains. However approximately one-quarter of influenza B viruses tested are due to the lineage not contained in the trivalent seasonal vaccine (TIV). The mis-match compared to the TIV is most evident in Queensland and New South Wales.

Full Report

top of page

Previous Reports and Updates

Annual Reports

Accessibility Issues

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

top of page

Document help

When accessing large documents (over 500 KB in size), it is recommended that the following procedure be used:

  1. Click the link with the RIGHT mouse button
  2. Choose "Save Target As.../Save Link As..." depending on your browser
  3. Select an appropriate folder on a local drive to place the downloaded file

Attempting to open large documents within the browser window (by left-clicking) may inhibit your ability to continue browsing while the document is opening and/or lead to system problems.

To view PDF (Portable Document Format) documents, you will need to have a PDF reader installed on your computer. A number of PDF readers are available through the Australian Government Information Management Office (AGIMO) Web Guide website.