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 1 July 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 143,922 notifications of laboratory confirmed influenza reported to the NNDSS in the year to 1 July.

Total notifications from each state and territory are as follows:

ACT 1,560
NSW 78,676
NT 2,034
QLD 24,383
SA 6,277
TAS 954
VIC 25,662
WA 4,376

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. 

 

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For more information visit NCIRS here

Australian Capital Territory

Reporting period Friday 21 June 2024 to Thursday 27 June 2024 inclusive

Total influenza cases:

  • Current reporting period: 231
  • 2024 total: 1,450
  • Rate per 100,000 for reporting period: 49.5
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For more information:

https://www.health.act.gov.au/about-our-health-system/population-health/winter-wellbeing-and-flu/flu-act

https://www.covid19.act.gov.au/updates/act-covid-19-statistics

https://www.act.gov.au/directorates-and-agencies/act-health/strategies-programs-and-reports/reports/repiratory-illness-reporting-in-the-act

 

New South Wales

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

Week ending 22 June 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.

Summary:

  • Influenza activity is at a high level and continues to increase, with the number of presentations to emergency departments increasing and the number of influenza notifications also increasing.
  • Test positivity for influenza, which is a key indicator of activity, has increased to 18.9%.
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For more information: NSW Health – Respiratory Surveillance Reports

Queensland

Reporting Period: 1 January – 23 June 2024

Total influenza cases YTD (1 Jan – 23 June 2024): 21,211

  • 21,211 notifications during the reporting period, a 44% decrease compared to the same period last year.
  • 20,319 (96%) were type A only and 867 (4%) were type B.
  • 2,284 (11%) were aged less than 5 years including 100 (<1%) aged less than 6 months while 3,356 (16%) were aged 65 years and over.
  • 2,154 (10%) were admitted to hospital, 953 (44%) of these were aged 65 years and older.

South Australia

Update for the week ending at 22 June 2024

 

Count of influenza notifications in the week ending 22 June 2024: 619

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For more information: Communicable Diseases Control Branch

Tasmania

Report for the fortnight ending 23 June 2024

Summary

  • Influenza activity is currently moderate and increasing, suggesting seasonal activity.

Influenza notifications for week ending 23 June: 106

Influenza rate*: 18.5

* Notification rate per 100,000 population.

 

Victoria

1 July 2024

 

Victoria, local public health areas and local government areas surveillance summary report

Total influenza cases (YTD):  25,823

Western Australia

Week ending 2 June 2024

 

Influenza and Influenza-like Illnesses (ILI) Summary:

  • Influenza notifications increased and remained above the seasonal threshold in the past week.
  • In the past week the number of influenza cases notified to the Department of Health increased by 14% to 309 cases, remaining above the seasonal threshold.
  • In the year to date, the number of influenza notifications, hospitalisations, and deaths* were lower than the previous five-year average . Thirty-one percent of notifications were in those aged less than 15 years.
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For more information: WA Virus WAtch

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

Update for 3rd June — 16th June 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.

 

NATIONAL SUMMARY

Influenza-like-illness levels are increasing

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

  • 21 x Influenza A
  • 1 x Influenza B

18% Influenza positivity during the reporting period.

92 Cases of influenza have been detected this year:

  • 83 x Influenza A
  • 9 x Influenza B

SYNDROMIC SURVEILLANCE REPORTING

Reports were received from 328 reporters from 8 states and territories during the reporting period. During weeks 23 and 24 reporters saw a total of 46,280 patients.

INFLUENZA-LIKE-ILLNESS (ILI)

Nationally, ILI notifications increased during the period with 390 notifications being reported in weeks 23—24. ILI rates reported in this period were 8 and 11 cases per 1000 consultations (weighted). This was higher than the previous fortnight where rates were 9 cases per 1000 consultations in weeks 21 and 22. For the same reporting period in 2023, ILI rates were lower at 7 and 8 cases per 1000 consultations for weeks 23 and 24 respectively.


FluTracking

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.

Reporting week Monday 17  June 2024- Sunday 23 June 2024

(Data used in this report received up to 09:00 AM, Thursday 27 June)

Summary:

  • Respiratory illness levels have increased this week.
  • 51,960 participants this week

Respiratory illness activity*:

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

2.3% this week and 2.2% last week

Respiratory illness activity among Aboriginal and Torres Strait Islander participants:

2.7% this week and 2.4% last week

Respiratory illness severity:

27.4% of participants with fever and cough sought medical advice this week.

 


New Zealand

Week ending 23 June 2024

Summary

Indicators of influenza-like (ILI) illness in the community remain at levels expected for this time of year. The rate of HealthStat GP ILI consultations in the week ending 16 June is similar to the same time in 2023 (note that HealthStat data currently has a one-week lag).

In the week ending 23 June the rate of ILI-related calls to Healthline is lower than this same time in 2023. Healthline call rates and HealthStat GP ILI consultation rates are highest among young children. Respiratory syncytial virus (RSV) and influenza (predominantly A/H1 virus) continue to circulate in the community.

There were four respiratory viral illness outbreaks reported in the week ending 23 June. Three outbreaks were in early childhood education (ECE) centres: two in Dunedin (influenza A detected in one) and one in Tauranga (RSV detected). One outbreak was in an aged residential care (ARC) facility in Invercargill (influenza A detected).

Severe acute respiratory infection (SARI) surveillance in the Auckland region currently occurs year-round. In the week ending 23 June, the SARI hospitalisation rate remains in the medium seasonal activity range. Recent SARI activity has been predominantly associated with RSV and rhinovirus detections in children under 5 years of age. The influenza-positive SARI hospitalisation rate remains in the low activity range and it is higher than the same time in 2023.

Influenza A viruses have predominated (both A/H1 and A/H3 have been detected in recent weeks). 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: https://tewhatuora.shinyapps.io/covid19/

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

Page Published: 7 February 2021 | Page Updated: 1 July 2024