Role of the diagnostic laboratories during the 2007 equine influenza outbreak in Australia.

During the 2007 equine influenza (EI) outbreak in Australia, diagnostic laboratories and the use of appropriate tests played a pivotal role in the response to the crisis. This role began with the detection of EI virus in New South Wales (NSW) on the evening of 24 August 2007 and culminated in providing the final 'proof of freedom' from EI in March 2008. The tests that were used during the EI response were able to provide results quickly, and with high sensitivity and specificity. This section of the supplement describes the roles and functions of the Australian laboratories; tests used and their performance characteristics; improvements made and methods used to validate assays; strategies that were followed during the response; the characterisation of viruses detected; and the resources that were available to laboratories.