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: 17 April 2014

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.

Current Australian Influenza Activity Update – week ending 11 April 2014

  • Nationally the 2013 influenza season peaked at the end of August, with notifications remaining higher than usual over the summer period (Figure 1).
  • Australia is currently in the inter-seasonal period for influenza. Across most jurisdictions, influenza activity is higher than in previous years, however current levels are stable (Figure 2).
  • Overall, influenza activity levels are low and stable, but higher than at the same time in previous years (Figures 1 and 4).
  • There is no indication that the 2014 influenza season has commenced, nor any indication of the potential severity of the season.
  • Nationally influenza A remains the predominant influenza virus type. Of those viruses where subtyping data is available, A(H1N1)pdm09 is most common (Figure 3).

Figure 1: Notifications of laboratory confirmed influenza, Australia, 1 January 2010 to 11 April 2014

Source: National Notifiable Diseases Surveillance System

Figure 2: Notifications of laboratory confirmed influenza, Australia, 1 January to 11 April 2014, by state or territory and week

Source: National Notifiable Diseases Surveillance System Note: Each figure has a different vertical scale range

Figure 3: Notifications of laboratory confirmed influenza, Australia, 1 January 2010 to 11 April 2014, by subtype and week

Source: National Notifiable Diseases Surveillance System

Figure 4: Weekly rate of ILI reported from sentinel General Practitioner ILI surveillance systems, 1 January 2010 to 13 April 2014, by week

Source: Australian Sentinel Practices Research Network and the Victorian Infectious Disease Reference Laboratory General Practitioner influenza-like illness surveillance systems

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.