FW: Australian Influenza Surveillance Report no.38 2010 [SEC=UNCLASSIFIED]

[Wishart, Michael]

Dear All

The Australian Influenza Surveillance Report no.38 2010 which reports on
influenza activity up until 24 September 2010 has been produced.

Of note
Levels of influenza-like illness (ILI) in the community have continued to
increase through most surveillance systems this reporting period. Local,
regional and widespread activity was reported within jurisdictions. The
number of laboratory confirmed notifications has also increased.
There were 933 laboratory confirmed notifications of influenza during thisreporting period, including 732 pandemic (H1N1) 2009 cases. Notifications
of laboratory confirmed influenza were highest in SA.
Results from sentinel laboratory surveillance systems for this reporting
period show that 17% of the respiratory tests conducted over this period
were positive for influenza, which is a slight increase from the last
reporting period (14%). In 2010, a total of 973 specimens have been
positive for influenza
(of 12,228 specimens tested), of which 69% were pandemic (H1N1) 2009, 9%
were A/H3N2 and 19% were influenza B.
There have been 7,138 confirmed cases of influenza diagnosed in 2010 up to24 September.
A total of 41,715 confirmed cases of pandemic (H1N1) 2009 have occurred inAustralia since May 2009.
Sentinel hospitals reported a decrease in the number of influenza
associated hospitalisations compared to previous weeks, with 18 admissionsduring the reporting period, including 13 for pandemic (H1N1) 2009. ANZICSreported 12 ICU admissions for influenza and the APSU reported three casesof influenza complications in children (<15 years) this reporting period.
The WHO has advised that the world is no longer in phase 6 of influenza
pandemic alert, and has moved into the post pandemic period. As at 1
August 2010, over 18,449 deaths worldwide have been reported associated
with the pandemic virus. Chile has reported a recent increase in influenzanotifications, most of which are H3N2.

A summary version of this report will shortly be available on the web at
the following address:
http://www.healthemergency.gov.au/internet/healthemergency/publishing.nsf/Content/resources

If you have any questions, comments or feedback please reply to
flu@health.gov.au

Kind regards,

Influenza Surveillance Team
Vaccine Preventable Disease Surveillance Section
Surveillance Branch
Office of Health Protection

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