Evaluating the control of HPAIV H5N1 in Vietnam: virus transmission within infected flocks reported before and after vaccination |
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| Authors: | Ricardo J Soares Magalhães Dirk U Pfeiffer Joachim Otte |
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| Institution: | (1) The Royal Veterinary College, Department of Veterinary Clinical Sciences, Veterinary Epidemiology and Public Health Group, London, UK;(2) Hawkshead Lane, AL9 7TA, UK;(3) School of Population Health, University of Queensland, Edith Cavell Building, Herston Road, Herston, QLD, 4006, Australia;(4) Food and Agriculture Organization of the United Nation, Pro-Poor Livestock Initiative, Vialle Del Terme de Caracalla, 00153 Rome, Italy |
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| Abstract: | Background Currently, the highly pathogenic avian influenza virus (HPAIV) of the subtype H5N1 is believed to have reached an endemic
cycle in Vietnam. We used routine surveillance data on HPAIV H5N1 poultry outbreaks in Vietnam to estimate and compare the
within-flock reproductive number of infection (R
0
) for periods before (second epidemic wave, 2004-5; depopulation-based disease control) and during (fourth epidemic wave,
beginning 2007; vaccination-based disease control) vaccination. |
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| Keywords: | |
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