The early transmission dynamics of H1N1 pandemic influenza in the United Kingdom

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Ghani, Azra C and Baquelin, Marc and Griffin, Jamie T. and Flasche, Stefan and Pebody, R.G. and Albert Jan, Van Hoek and Cauchemez, Simon and Hall, Ian M. and Donnelly, Christl A. and Robertson, Christopher and White, Michael T. and Barrass, Iain and Fraser, Christophe and Bermingham, Alison and Truscott, James and Ellis, Joanna and Jenkins, Helen E. and Kafatos, George and Garske, Tini and Harris, Ross and McMenamin, J. and Hawkins, Colin and Phin, Nick and Charlett, André and Zambon, Maria and Edmunds, W. John and Catchpole, Mike and Leach, Steve and White, Peter and Ferguson, Neil M. and Coooper, Ben S. (2010) The early transmission dynamics of H1N1 pandemic influenza in the United Kingdom. PLOS Currents: Influenza, RRN1130.

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Abstract

We analyzed data on all laboratory-confirmed cases of H1N1pdm influenza in the UK to 10th June 2009 to estimate epidemiological characteristics. We estimated a mean incubation period of 2.05 days and serial interval of 2.5 days with infectivity peaking close to onset of symptoms. Transmission was initially sporadic but increased from mid-May in England and from early June in Scotland. We estimated 37% of transmission occurred in schools, 24% in households, 28% through travel abroad and the remainder in the wider community. Children under 16 were more susceptible to infection in the household (adjusted OR 5.80, 95% CI 2.99-11.82). Treatment with oseltamivir plus widespread use of prophylaxis significantly reduced transmission (estimated reduction 16%). Households not receiving oseltamivir within 3 days of symptom onset in the index case had significantly increased secondary attack rates (adjusted OR 3.42, 95% CI 1.51-8.55).

  • Item type:Article
    ID code:29112
    Dates:
    Date
    Event
    13 June 2010
    Published
    Subjects:UNSPECIFIED
    Department:Faculty of Science > Mathematics and Statistics
    Depositing user: Pure Administrator
    Date deposited:07 Mar 2011 23:25
    Last modified:11 Nov 2024 09:40
    Related URLs:
    URI:https://strathprints.strath.ac.uk/id/eprint/29112
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