FW: Australian Influenza Surveillance Report no.14. 2011

[Wishart, Michael]

Dear all,

Please find attached the Australian Influenza Surveillance Report no.14. 2011 for the period of 3 September to 16 September 2011.

Of note:
* Levels of influenza-like illness (ILI) in the community continued to decrease through both sentinel general practitioner surveillance systems and ILI presentations to emergency departments.
* Notifications are continuing to decrease across most states and territories, however notifications in South Australia have continued to plateau.
* During this fortnight there were 1,443 laboratory confirmed notifications of influenza, with South Australia, Queensland and Victoria reporting the highest number of notifications. Nationally, the majority of virus detections have been pandemic (H1N1) 2009, with co-circulation of influenza B.
* In the Northern Territory this fortnight notifications of influenza A(H3N2) represent 70% of their notifications, and nationally the majority of A(H3N2) notifications are being reported from the Northern Territory, Queensland and Western Australia. In Tasmania, New South Wales, and more recently Queensland, influenza B continues to be dominant.
* As at 30 September 2011, there have been 24,049 confirmed cases of influenza reported to the National Notifiable Diseases Surveillance System (NNDSS) in 2011. Nationally, weekly notifications for this season peaked in the week ending 5 August 2011 with 1,988 influenza notifications. This peak was above the peak frequency experienced in previous years, except 2009.
* The WHO has reported that influenza activity in the temperate regions of the northern hemisphere remain low. Influenza transmission continues to occur in a few countries of the tropical region. In New Zealand, rates of national ILI consultations are currently below baseline activity levels, and influenza type B is currently the predominant strain circulating.
* The WHO has recommended the following viruses be used for influenza vaccines in the 2012 influenza season (southern hemisphere): an A/California/7/2009 (H1N1) pdm09-like virus; an A/Perth/16/2009 (H3N2)-like virus; and a B/Brisbane/60/2008-like virus. This recommended composition is the same as the current 2011 southern hemisphere and the 2011-2012 northern hemisphere vaccine compositions.

We apologise for the delay in the distribution of this report. Please note however, nationally influenza trends continue to decline.

A summary version of this report will shortly be available on the web at the following address:
http://www.health.gov.au/internet/main/publishing.nsf/Content/cda-surveil-ozflu-flucurr.htm

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

Kind regards,

Influenza Surveillance Team
| Vaccine Preventable Diseases Surveillance | Health Protection & Surveillance Branch | Office of Health Protection | Department of Health and Ageing |
Please note that the Influenza Surveillance Team, of the Vaccine Preventable Diseases Surveillance Section has a group e-mail address which is flu@health.gov.au. While you can still email individual members of the team, this email address will ensure prompt responses and will avoid delays when individual staff members are absent.

________________________________________
“Important: This transmission is intended only for the use of the addressee and may contain confidential or legally privileged information. If you are not the intended recipient, you are notified that any use or dissemination of this communication is strictly prohibited. If you receive this transmission in error please notify the author immediately and delete all copies of this transmission.”

This e-mail message and any accompanying files may contain
information that is confidential and subject to privilege. If you
are not the intended recipient, and have received the e-mail
in error, you are notified that any use, dissemination,
distribution, forwarding, printing or copying of the message
and any attached files is strictly prohibited. If you have
received this e-mail message in error please immediately
advise the sender by return e-mail, or telephone 1800 243 903.
You must destroy the original transmission and its contents.
Any views expressed within this communication are those of
the individual sender, except where the sender specifically
states them to be the views of Ramsay Health Care.
This communication should not be copied or disseminated
without permission.
————————————————————————

Messages posted to this list are solely the opinion of the authors, and do not represent the opinion of AICA.

Archive of all messages are available at http://aicalist.org.au/archives – registration and login required.

Replies to this message will be directed back to the list. To create a new message send an email to aicalist@aicalist.org.au

To send a message to the list administrator send an email to aicalist-request@aicalist.org.au.

You can unsubscribe from this list be sending ‘signoff aicalist’ (without the quotes) to listserv@aicalist.org.au

[Author]

Posts