RT Journal Article SR Electronic(1) A1 Kelly, H A1 Grant, K YR 2009 T1 Interim analysis of pandemic influenza (H1N1) 2009 in Australia: surveillance trends, age of infection and effectiveness of seasonal vaccination JF Eurosurveillance VO 14 IS 31 SP 19288 OP DO https://doi.org/10.2807/ese.14.31.19288-en UL https://www.eurosurveillance.org/content/10.2807/ese.14.31.19288-en