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Volume 16, Number 12—December 2010


Online Flutracking Survey of Influenza-like Illness during Pandemic (H1N1) 2009, Australia

Sandra J. Carlson, Craig B. Dalton, David N. DurrheimComments to Author , and John Fejsa
Author affiliations: Author affiliations: Hunter Medical Research Institute, Wallsend, New South Wales, Australia (S.J. Carlson, C.B. Dalton, D.N. Durrheim); Hunter New England Population Health, Newcastle, New South Wales, Australia (S.J. Carlson, C.B. Dalton, D.N. Durrheim, J. Fejsa); Newcastle University, Newcastle (C.B. Dalton, D.N. Durrheim)

Main Article


Peak ILI attack week and attack rates across influenza surveillance systems in New South Wales, Australia, 2007–2009*

Surveillance system/weekly measure used Peak week of ILI (week ending)
Peak ILI/influenza-related values
2007 2008 2009 2007 2008 2009
Flutracking, fever and cough rate, % Aug 5 Aug 24 Jul 12 9.4 5.8 6.8
No. laboratory notifications Aug 5 Aug 31 Jul 12 133 69 1,167
No. ED ILI visits
Aug 19
Aug 31

Google Flu Trends
Influenza-related search term counts
Jul 22
Aug 31
Jul 12

Workplace absenteeism, weekly rate, % Jul 15 ND Jul 19 1.5 ND 1.4
ASPREN, ILI/1,000 consultations, % Aug 12 Sep 7 Jul 19 73.7 62.8 74.3

*ILI, influenza-like illness; ED, emergency department; ND, no data collected; ASPREN, Australian Sentinel Practice Research Network.

Main Article