Serological Response in RT-PCR Confirmed H1N1-2009 Influenza A by Hemagglutination Inhibition and Virus Neutralization Assays: An Observational Study

• Mark I. Chen ,

  * E-mail: Mark_IC_Chen@ttsh.com.sg

  Affiliations Clinical Epidemiology, Tan Tock Seng Hospital, Singapore, Singapore, Epidemiology and Public Health, National University of Singapore, Singapore, Singapore, Duke-NUS Graduate Medical School, Singapore, Singapore

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• Ian G. Barr,

  Affiliation World Health Organization Collaborating Centre for Reference and Research on Influenza, Melbourne, Victoria, Australia

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• Gerald C. H. Koh,

  Affiliations Epidemiology and Public Health, National University of Singapore, Singapore, Singapore, Centre for Health Services Research, National University of Singapore, Singapore, Singapore

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• Vernon J. Lee,

  Affiliations Epidemiology and Public Health, National University of Singapore, Singapore, Singapore, Centre for Health Services Research, National University of Singapore, Singapore, Singapore, Biodefence Centre, Ministry of Defence, Singapore, Singapore, Centre for Epidemiology and Population Health, Australian National University, Canberra, Australian Capital Territory, Australia

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• Caroline P. S. Lee,

  Affiliation Department of Infectious Diseases, Tan Tock Seng Hospital, Singapore, Singapore

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• Robert Shaw,

  Affiliation World Health Organization Collaborating Centre for Reference and Research on Influenza, Melbourne, Victoria, Australia

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• Cui Lin,

  Affiliation National Public Health Laboratory, Ministry of Health, Singapore, Singapore

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• Jonathan Yap,

  Affiliation Biodefence Centre, Ministry of Defence, Singapore, Singapore

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• Alex R. Cook,

  Affiliation Department of Statistics and Applied Probability, National University of Singapore, Singapore, Singapore

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• Boon Huan Tan,

  Affiliation Detection and Diagnostics Laboratory, DSO National Laboratories, Singapore, Singapore

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• Jin Phang Loh,

  Affiliation Detection and Diagnostics Laboratory, DSO National Laboratories, Singapore, Singapore

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• Timothy Barkham,

  Affiliation Department of Laboratory Medicine, Tan Tock Seng Hospital, Singapore, Singapore

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• Vincent T. K. Chow,

  Affiliation Department of Microbiology, National University of Singapore, Singapore, Singapore

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• Raymond T. P. Lin,

  Affiliation National Public Health Laboratory, Ministry of Health, Singapore, Singapore

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• Yee-Sin Leo

  Affiliation Department of Infectious Diseases, Tan Tock Seng Hospital, Singapore, Singapore

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