Influenza Statistics

Get the latest Australian influenza figures, sourced from Government departments.

Immunisation Coalition

Influenza Activity Surveillance 2021

This report provides a summary of influenza surveillance data collected from around Australia and New Zealand. Regional reporting in some areas ceases when influenza activity is low (out of season). Please note that many people do not get tested for influenza and that there may also be some delays in reporting confirmed influenza cases.

Therefore data presented here may be underestimating influenza activity.


National Notifiable Diseases Surveillance System (NNDSS)

There have been a total of 66 laboratory confirmed notifications of Influenza in Australia for 2021, as at 8th February 2021.

  • ACT:                    1
  • NSW:                  7
  • NT:                      1
  • QLD:                 29
  • SA:                       3
  • TAS:                    4
  • VIC:                   17
  • WA:                     4


New South Wales

The weekly flu report has currently been suspended due to the COVID response, however weekly influenza information is available in the COVID-19 weekly surveillance report.


For more information: NSW Health – Infectious Diseases Alert


As of January 2021 Influenza reporting has not yet commenced.


For more information: QLD Health – Preventable Diseases

South Australia

Week 24 – 30 January 2021

One case of influenza was reported this week in a ten year-old male. There have been four cases of influenza notified year-to-date, compared with 403 cases reported for the same period last year. 


For more information: Communicable Diseases Control Branch


Week ending 31 January 2021

Number of laboratory confirmed flu notifications for this week: 0

Total influenza cases YTD: 4  [2 x influenza A and 2 x influenza B]


For more information: Communicable Diseases Prevention – FluTAS


Reporting has not yet commenced for 2021

Western Australia

Week ending 24 January 2021

It is important to note that the influenza and ILI surveillance systems in WA have been impacted by the COVID-19 pandemic. Therefore, interpretation of respiratory viral activity should be done with caution and take into account the effects of changes in health seeking behaviour including accessing alternate health services such as telehealth, focused testing for COVID-19 at COVID-19 clinics or specific acute respiratory infection clinics and the impact of physical distancing measures.

Indicators of influenza activity remain below interseasonal levels.
ILI activity at Emergency Departments (EDs) decreased over the past five weeks. ILI activity at sentinel General Practices (GPs) was in the lower range of levels usually seen at this time of year.
There were no positive influenza samples reported by PathWest in the past week.


For more information: WA Virus WAtch

Australian Sentinel Practices Research Network (ASPREN)

ASPREN is a national syndromic surveillance program co-ordinated by the Discipline of General Practice at the University of Adelaide and The Royal Australian College of General Practitioners. One of the conditions under surveillance is influenza like illness (ILI). General practitioners participating in the ASPREN program contribute data on the proportion of consultations which are ILI related.

2021 Reports are not yet available

National Summary

Syndromic Surveillance


Influenza-Like-Illness (ILI):

(Baseline ILL < 3 & 4 in 1000 consultations, Normal 4< ILL rate <24).


For more information: ASPREN


FluTracking is an online health surveillance system which aims to detect epidemics of influenza. It is a joint initiative of The University of Newcastle, Hunter New England Area Health Service (NSW Health) and Hunter Medical Research Institute. Participation is voluntary and involves the completion of a weekly online survey during the influenza season. Data are collected on basic demographics, symptoms of ILI and absenteeism.

Week ending 31 January 2021

This week influenza-like illness activity is low.
(Data received up to 9:00am, Thursday 4 February)

Influenza-like illness activity:
Fever and cough: 0.3% this week (flu-like illness activity is historically low)

Influenza-like illness severity:
61.4% of participants with fever and cough sought medical advice this week

47,545 participants (37,790 last week)


For more information, or to enrol: Flu Tracking

New Zealand

Surveillance reporting has not yet commenced for 2021



For more information:  NZ Flu Surveillance

Page Published: 2 March 2020 | Page Updated: 7 April 2021