Influenza Statistics

Get the latest Australian influenza figures, sourced from the National Notifiable Diseases Surveillance System (NNDSS)

Immunisation Coalition

Influenza Activity Surveillance & Graph 2024


Click on the icon for a graph of statistics.

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)

Update for 20 May 2024

It is important to note that data reported from the various influenza surveillance systems may not represent an accurate reflection of influenza activity. There may be some delays in the reporting systems. Also, many who become unwell with influenza-like symptoms do not present to their doctor and are not tested for influenza.

Results should be interpreted with caution.

National notification data (NNDSS):

There have been 56,105 notifications of laboratory confirmed influenza reported to the NNDSS in the year to 20 May.

Total notifications from each state and territory are as follows:

ACT 603
NSW 24,193
NT 1,489
QLD 13,562
SA 3,025
TAS 471
VIC 10,066
WA 2,696


National Vaccination Coverage Rates

Influenza vaccination is recommended for all Australians aged 6 months and older. Flu vaccination reporting to the Australian Immunisation Register (AIR) is mandatory allowing coverage rates to be monitored.

NCIRS has commenced reporting of influenza vaccination coverage for the 2024 influenza season, which will continue until the end of August. 



For more information visit NCIRS here

Australian Capital Territory

In 2024, data reporting for influenza and RSV will commence when notification numbers indicate the influenza season has commenced – this varies from year to year but likely to be around May/June. Reporting will remain available until the end of the season, usually around September/October.

New South Wales

Weekly influenza information is available in the COVID-19 weekly surveillance report.

Week ending 11 May 2024

Note that many people with influenza in the community do not get tested for influenza, and that there may be delays in the reporting of confirmed influenza cases. Therefore data presented here may tend to under-represent current influenza activity in NSW.


  • The 2024 influenza season has started.
  • It is expected that influenza activity will increase rapidly over the next 6 to 8 weeks.
  • In the past week there was an increase of 32% in influenza notifications.

For more information: NSW Health – Respiratory Surveillance Reports


14 May 2024

Total influenza cases YTD (1 Jan – 12 May 2024): 12,744

  • 41 people were in hospital with Influenza, most (54%) were aged 65 years or more.
  • 578 people diagnosed in the last week, 96 (17%) were aged 65 years or more.

South Australia

Update for the week ending at 11 May 2024


Count of influenza notifications in the week ending 11 May 2024: 276


For more information: Communicable Diseases Control Branch


Report for the fortnight ending 12 May 2024


  • Acute respiratory illness (ARI) activity in Tasmania is currently moderate and stable.
  • Influenza activity is currently low and stable.

Influenza notifications for week ending 12 May: 22

Influenza rate*: 3.8

* Notification rate per 100,000 population.



There is currently no data available for influenza surveillance in Victoria.

Western Australia

Week ending 12 May 2024


Influenza and Influenza-like Illnesses (ILI) Summary:

  • • In the past week, most indicators of ILI activity increased or remained stable.
  • Influenza notifications increased in the past week but remained below the seasonal threshold.
  • The number of influenza cases notified to the Department of Health increased by 6% to 172 cases in the past week, remaining below the seasonal threshold.
  • In the year to date, the number of influenza notifications and hospitalisations were higher than the previous five-year average, while the number of reported deaths was lower. Vaccination coverage to date was highest in the ≥ 65-year age group. One-quarter of notifications were in those aged less than 15 years.

For more information: WA Virus WAtch

Australian Sentinel Practices Research Network (ASPREN), FluTracking and New Zealand

Update for 22 April – 05 May 2024

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.



Influenza-like-illness levels remain steady above baseline levels.

7 Cases of influenza have been detected in this reporting period:

  • 6 x Influenza A
  • 1 x Influenza B

7% Influenza positivity during the reporting period.

46 Cases of influenza have been detected this year:

  • 39 x Influenza A
  • 7 x Influenza B


Reports were received from 288 reporters from 8 states and territories during the reporting period. During weeks 17 and 18 reporters saw a total of 40,966 patients.


Nationally, ILI notifications remained steady during the period with 190 notifications being reported in weeks 17—18. ILI rates reported in this period were 6 and 5 cases per 1000 consultations (weighted). This was similar to the previous fortnight where rates were 6 and 5 cases per 1000 consultations in weeks 15 and 16 respectively. For the same reporting period in 2023, ILI rates were lower at 3 and 4 cases per 1000 consultations for weeks
17 and 18 respectively.


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 12 May 2024

(Data used in this report received up to 09:00 AM, Thursday 16 May)


  • 52,207 participants this week.
  • Respiratory illness levels have increased this week.

Respiratory illness activity*:

*Respiratory illness activity is defined as fever & cough for this report

1.8% this week and 1.7% last week.

Respiratory illness activity among Aboriginal and Torres Strait Islander participants:

2.4% this week and 1.8% last week.

Respiratory illness severity:

23.2%% of participants with fever and cough sought medical advice this week.



New Zealand

Week ending 12 May 2024


Indicators of influenza-like (ILI) illness in the community remain low. The rate of ILI-related Healthline calls has increased in the week ending 12 May but remains below the rate seen at the same time in 2023. Rates are highest among young children. RSV and influenza continue to circulate in the community. No ILI or acute respiratory illness outbreaks were reported in the week ending 12 May. The percentage of FluTracking participants with fever and cough increased in the week ending 12 May and is similar to the same time in 2023.

The hospitalisation rate for severe acute respiratory infections (SARI) in the Auckland region increased in the week ending 12 May and is higher than at the same time in 2023 but remains in the low activity range. Recent SARI activity has been predominantly associated with increasing respiratory syncytial virus (RSV) and rhinovirus detections in children under 5 years of age. The influenza-positive SARI hospitalisation rate is slightly above the baseline seasonal level and slightly lower than the same time in 2023 (see the Hospitalisations tab for more details).

Influenza A viruses have predominated, albeit in low numbers, to date in 2024. The SARS-CoV-2-positive SARI hospitalisation rate is similar to the same time in 2022 and 2023. This does not necessarily reflect the trend in all COVID-19 related hospital admissions monitored by Health New Zealand, as different definitions are used: .


ASPREN: For more information: ASPREN
Flu Tracking: For more information, or to enrol: Flu Tracking
New Zealand reporting: For more information see here

Page Published: 7 February 2021 | Page Updated: 20 May 2024