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Volume 17, Number 6—June 2011

Research

Use of Antiviral Drugs to Reduce Household Transmission of Pandemic (H1N1) 2009, United Kingdom1

Richard G. PebodyComments to Author , Ross Harris, George Kafatos, Mary Chamberland, Colin Campbell, Jonathan S. Nguyen-Van-Tam, Estelle McLean, Nick Andrews, Peter J. White, Edward Wynne-Evans, Jon Green, Joanna Ellis, Tim Wreghitt, Sam Bracebridge, Chikwe Ihekweazu, Isabel Oliver, Gillian Smith, Colin Hawkins, Roland Salmon, Brian Smyth, Jim McMenamin, Maria Zambon, Nick F. Phin, and John M. Watson
Author affiliations: Author affiliations: Health Protection Agency, London, UK (R.G. Pebody, R. Harris, G. Kafatos, M. Chamberland, C. Campbell, J.S. Nguyen-Van-Tam, E. McLean, N. Andrews, P.J. White, E. Wynne-Evans, J. Green, J. Ellis, T. Wreghitt, S. Bracebridge, C. Ihekweazu, I. Oliver, G. Smith, C. Hawkins, M. Zambon, N. Phin, J.M. Watson); Imperial College, London (P.J. White); Public Health Wales, Cardiff, Wales, UK (R. Salmon); Public Health Agency Northern Ireland, Belfast, Northern Ireland (B. Smyth); Health Protection Scotland, Glasgow, Scotland (J. McMenamin)

Main Article

Table 5

Pandemic (H1N1) 2009 virus infection SAR, by age of patient with virologically confirmed primary case, United Kingdom, 2009*

Transmission† No. contacts No. secondary
case-patients SAR, %
(95% CI)
Child to child 148 29 19.6 (13.5–26.9)
Child to adult 318 9 2.8 (1.3–5.3)
Adult to adult 231 13 5.6 (3.0–9.4)
Adult to child 64 11 17.2 (8.9–­28.7)

*SAR, secondary attack rate; CI, confidence interval.
†Primary case-patient to contact.

Main Article

1Elements of this work were presented at the Health Protection Agency Annual Conference in 2009. An abstract was presented at the International Conference on Emerging Infectious Diseases, Atlanta, Georgia, USA, 2010.

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