Sullivan, Sheena; Komadina, Naomi; Grant, Kristina A.; Jelley, Lauren; Papadakis, Georgina; Kelly, Heath
Vaccine effectiveness may wane with increasing time since vaccination. This analysis used the Victorian sentinel general practitioner (GP) network to estimate vaccine effectiveness for trivalent inactivated vaccines in the 2012 season. A test-negative design was used where patients presenting to GPs with influenza-like illness who tested positive for influenza were cases and noncases were those who tested negative. Vaccination status was recorded by GPs. Vaccine effectiveness was calculated as...[Show more]
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