Australian Influenza Surveillance Report - week ending 07 October 2018 (#10/2018)

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; ILI-related community level surveys; and sentinel laboratory testing results.

Page last updated: 12 October 2018

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.

Australian Influenza Surveillance Report No 10 - week ending 07 October 2018


  • Activity –In the last fortnight, at the national level, the majority of indicators for person to person transmission of influenza and influenza-like illness (ILI) continued to decline, signalling that nationally the season peaked in early September. Influenza continued to be the dominant cause of ILI among patients attending sentinel GPs.
  • Severity –Clinical severity for the season to date, as measured through the proportion of patients admitted directly to ICU, and deaths attributed to influenza, is moderate.
  • Impact – Currently, the impact of circulating influenza on society, as measured through the proportion of people with ILI taking time off work, and the burden on hospitals, is low.
  • Virology – This fortnight, the majority of confirmed influenza cases reported nationally were influenza A (86%), and where subtyping data were available, influenza A(H1N1)pdm09 was the dominant subtype.
  • At-risk populations: Children aged less than 10 years appear to be more commonly infected with influenza; however the severity of illness in this population is on par with other age-groups.

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Previous Reports and Updates

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