Volume 17, Number 6—June 2011
Research
Use of Antiviral Drugs to Reduce Household Transmission of Pandemic (H1N1) 2009, United Kingdom1
Richard G. Pebody
, 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
, 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. WatsonTable 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.
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.
