Journal article
Seroepidemiologic effects of influenza A(H1N1)pdm09 in Australia, New Zealand, and Singapore
JM Trauer, D Bandaranayake, R Booy, MI Chen, M Cretikos, GK Dowse, DE Dwyer, ME Greenberg, QS Huang, G Khandaker, J Kok, KL Laurie, VJ Lee, J McVernon, S Walter, PG Markey
Emerging Infectious Diseases | CENTERS DISEASE CONTROL & PREVENTION | Published : 2013
Abstract
To estimate population attack rates of influenza A(H1N1)pdm2009 in the Southern Hemisphere during June-August 2009, we conducted several serologic studies. We pooled individual-level data from studies using hemagglutination inhibition assays performed in Australia, New Zealand, and Singapore. We determined seropositive proportions (titer >40) for each study region by age-group and sex in pre- and postpandemic phases, as defined by jurisdictional notification data. After exclusions, the pooled database consisted of, 4,414 prepandemic assays and 7,715 postpandemic assays. In the prepandemic phase, older age groups showed greater seropositive proportions, with age-standardized, community-based ..
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Funding Acknowledgements
We gratefully acknowledge the support of the Communicable Disease and Surveillance Branch of the Office of Health Protection, Department of Health and Ageing, Commonwealth of Australia; the World Health Organization Collaborating Centre for Reference and Research on Influenza, North Melbourne, Victoria; the Centre for Infectious Diseases and Microbiology Laboratory Services, Institute of Clinical Pathology and Medical Research, Westmead Hospital, Sydney; Western Diagnostic Pathology, Darwin; the National University of Singapore; the Singapore Ministry of Health; the Singapore Armed Forces; the Defence Science Organization National Laboratories, Singapore; Tan Tock Seng Hospital, Singapore; and Kandang Kerbau Hospital, Singapore. The Melbourne WHO Collaborating Centre for Reference and Research on Influenza is supported by the Australian Government Department of Health and Ageing.D.B, S.H., and the Institute of Environmental Science and Research received funding from the New Zealand Ministry of Health for serosurveillance research. V.L. and M.C. received funding from the National Medical Research Council of Singapore. M.G. is an employee of CSL Limited, which sponsored 2 participating studies. J.McV. received funding from the Australian Government Department of Health and Ageing for the purpose of serosurveillance research.