Influenza Activity Surveillance 2019
This report provides a summary of surveillance data collected from around Australia and New Zealand. Regional reporting in some areas ceases when flu 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.
Click above for an up to date PDF of Australian Influenza Statistics.
Commonwealth Department of Health & Ageing
There have been a total of 28,987 laboratory confirmed notifications of Influenza in Australia for 2019, at the start of 15 April.
- ACT: 219
- NSW: 8,552
- NT: 326
- QLD: 8,116
- SA: 5,164
- TAS: 394
- VIC: 4,627
- WA: 1,589
For more national data: National Notifiable Diseases Surveillance System
March 2019 report
Influenza activity in March was again higher than usual for this time of year.
Influenza activity was elevated across all NSW local health districts (LHD).
Influenza A strains are predominant with two strains circulating at similar levels.
Respiratory presentations to NSW emergency departments were at the upper end of the usual range for this time of year.
For more information: NSW Health – Infectious Diseases Alert
1 to 7 April 2019
From 1 to 7 April 2019 there were 710 notifications of Influenza: Influenza A: 680 and Influenza B: 30
27 cases were reported to have required hospitalisation.
Percentage of tests positive for the period: 15.1%
For more information: QLD Health – Preventable Diseases
31 March to 6 April 2019
From 1 January to 06 April 2019, there were 4,485 notifications of influenza reported to the Communicable Disease Control Branch, compared to 1,139 cases reported for the same period last year. Of these notifications:
- 2,450 were in females and 2035 were in males
- the age range is 0 – 101 years, with a median age of 35 years
- 4,263 cases (95%) were due to influenza A and 222 cases (5%) were due to influenza B
- 192 cases (4%) were reported to have required hospital admission
- One case (0.02%) was reported to have died from influenza (89 years)
For more information: Communicable Diseases Control Branch
Week ending 7 April 2019
INFLUENZA AND INFLUENZA-LIKE ILLNESSES (ILI)
Influenza activity has returned to inter-seasonal levels this week.
ILI activity at sentinel GPs and EDs increased slightly this week.
PathWest influenza detections and percent positivity decreased this week, and are at levels usually seen at this time of year.
Influenza A/H3N2 comprised the largest proportion of influenza detections at Pathwest this week (44%) followed by influenza A/H1N1 (25%), and influenza B (31%).
For more information: WA Virus WAtch
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.
11 – 24 March 2019
Influenza-like-illness levels remain steady above baseline levels.
14 cases of influenza have been detected in this reporting period: 14 x Influenza A
11% Influenza positivity during the reporting period.
52 cases of influenza have been detected this year: 52 x Influenza A; 0 x Influenza B.
Reports were received from 231 reporters from 8 states and territories during the reporting period. During weeks 9 and 10 reporters saw a total of 25,898 patients.
Nationally, ILI notifications increased during the period with 117 notifications being reported in weeks 11—12. ILI rates reported in this period remained steady at 4 cases per 1000 consultations (weighted) in weeks 11 and 12. This was similar to the previous fortnight where rates were 6 and 3 cases per 1000 consultations. For the same reporting period in 2018, ILI rates were lower at 1 and 3 cases per 1000 consultations for weeks 9 and 10 respectively.
(Baseline ILL < 3 & 4 in 1000 consultations, Normal 4< ILL rate <24).
For more information: ASPREN
FluTracking is a pilot 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.
Flu tracking has not yet commenced
For more information, or to enrol: Flu Tracking
Overall influenza activity has remained at low, expected inter seasonal levels in New Zealand, although there have been localised clusters of influenza in Hawke’s Bay and Southern DHBs, as well as Canterbury and the Wellington region, recently.
This report will be updated in May 2019 unless the out of season surveillance identifies influenza activity of interest.
For more information: NZ Flu Surveillance