Influenza Statistics
Get the latest Australian influenza figures, sourced from the National Notifiable Diseases Surveillance System (NNDSS)
Influenza Activity Surveillance & Graph 2026
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 14 April 2026
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 26,941 notifications of laboratory confirmed influenza reported to the NNDSS in the year to 14 April 2026.
Total notifications from each state and territory are as follows:
| ACT | 303 |
| NSW | 9,344 |
| NT | 522 |
| QLD | 8,450 |
| SA | 1,567 |
| TAS | 294 |
| VIC | 4,766 |
| WA | 1,695 |
For more national data: National Notifiable Diseases Surveillance System (NNDSS)
Australian Influenza Surveillance Report
https://nindss.health.gov.au/pbi-dashboard
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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.
For more information visit NCIRS here
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Australian Capital Territory
Please note: ACT weekly reporting for 2025 has ended. The weekly report will start again in the autumn and winter months in 2026, when the ACT is likely to see an increase in respiratory illnesses again. An annual summary report for 2025 will be published in early 2026.
Reporting period Friday 24 October 2025 to Thursday 30 October 2025 inclusive.
Total influenza cases:
- Current reporting period: 68
- 2025 total: 7,826
- Rate per 100,000 for reporting period: 14.3
For more information:
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New South Wales
Weekly influenza information is available in the COVID-19 weekly surveillance report.
Week ending 4 April 2026
Influenza remained at a low level of activity
Summary:
- Influenza is at a low level of activity.
- In the past week there was a decrease of 18.4% in influenza notifications.
- For more information: NSW Health – Respiratory Surveillance Reports
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Queensland
7 April 2026
- 13 people were in hospital with Influenza, 10 (77%) were aged 65 years and above.
- 335 people diagnosed in the last week, 75 (22%) were aged 65 years or more.
For more information: https://www.health.qld.gov.au/clinical-practice/guidelines-procedures/diseases-infection/surveillance/reports/flu
QLD Health – Notifiable Diseases
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South Australia
Update for the week ending at 4 April 2026:
Count of influenza notifications in the week ending 4 April 2026: 54
For more information: Communicable Diseases Control Branch
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Tasmania
Week ending 22 March 2026
Summary
- Influenza activity remains low at inter-seasonal levels.
Influenza notifications for week ending 22 March: 14
2026 YTD influenza notifications: 361
For more information: https://www.health.tas.gov.au/publications/respiratory-surveillance-report
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Victoria
14 April 2026
Victoria, local public health areas and local government areas surveillance summary report
Total influenza cases (YTD): 4,925
For more information: Victorian Infectious Diseases Reference Laboratory or Victorian State Health Department
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Western Australia
Week ending 5 April 2026
Influenza and Influenza-like Illnesses (ILI) Summary:
- In the past week, influenza notifications remained below levels observed in recent years at 58 notifications
- Influenza PCR test positivity at PathWest remains low at 1.0% in the past week
- PathWest reported 9 influenza detections in the past week, comprising 2 A/H1, 3 A/H3, 2 influenza A not yet subtyped and 2 influenza B. These detections accounted for 16% of statewide influenza notifications.
For more information: WA Virus WAtch
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FluTracking and New Zealand
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 30 March 2026 – Sunday 05 April 2026
(Data used in this report received up to 09:00 AM, Thursday 09 April 2026)
Summary:
- Respiratory illness levels have increased this week
- 42838 participants this week
Respiratory illness activity* (age standardised):
*Respiratory illness activity is defined as fever & cough for this report
1.2% this week and 1.1% last week
Respiratory illness activity among Aboriginal and Torres Strait Islander participants:
0.9% this week and 1.1% last week
Respiratory illness severity:
Sought medical advice for fever and cough symptoms: 27.9% (77/276) this report* compared to 28.8% last report.
*Includes those who sought medical advice from a general practitioner, Aboriginal and Torres Strait Islander health clinic, COVID-19 clinic, emergency department, or were admitted to hospital for fever and cough.
Flu Tracking: For more information, or to enroll: Flu Tracking
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New Zealand
26 March 2026
Summary
The dashboard is being updated monthly with the next update on Thursday 30 April 2026.
The national rate for ILI-related Healthline calls has increased slightly since the last update on 22 February 2026 and is similar to this time in 2025. Te Waipounamu has had the highest weekly rates of ILI-related Healthline calls.
Respiratory virus detections are very low across most laboratories, but rhinovirus/enterovirus, influenza, and RSV are among the viruses being detected. Please also note that FluTracking has been paused in New Zealand from January 2026.
Eight respiratory illness outbreaks were reported from 23 February to 22 March 2026. All eight outbreaks were in aged residential care facilities: seven had SARS-CoV-2 detected (three in Bay of Plenty, two in Waikato, one in Capital, Coast and Hutt Valley, and one in Nelson Marlborough), and one had an unknown pathogen (Waikato).
Over the past month, the weekly all cause hospitalisation rate for SARI in the Auckland region increased and remained slightly below the baseline seasonal threshold. Recent testing process changes at Auckland-based hospitals has affected the virology results available at present for some SARI patients. Of the samples that have been received for 2026, rhinovirus has predominated (95 samples), followed by SARS-CoV-2 (34 samples). The influenza-positive SARI hospitalisation rate remains below the seasonal threshold and lower than this time in 2023-2025.
The SARS-CoV-2-positive SARI hospitalisation rate remains low and is lower than this time in 2023-2025. This does not necessarily reflect the trend in all COVID-19 related hospital admissions monitored by Health New Zealand, as different definitions for admission are used: https://www.tewhatuora.govt.nz/for-health-professionals/data-and-statistics/covid-19/reporting . PHF Science’s wastewater dashboard indicates an increase in community SARS-CoV-2 infection over 2026 to date, with NB.1.8.1, followed by XFG predominating (https://www.phfscience.nz/digital-library/wastewater-dashboard/). .