tetano
Editor, Senior Moderator
Vaccine. 2011 Jan 31. [Epub ahead of print]
No effect of 2008/09 seasonal influenza vaccination on the risk of pandemic H1N1 2009 influenza infection in England.
Pebody R, Andrews N, Waight P, Malkani R, McCartney C, Ellis J, Miller E.
Health Protection Agency Centre for Infections, 61 Colindale Avenue, UK.
Abstract
This study reports effectiveness of trivalent influenza vaccine (TIV) against confirmed pandemic influenza infection in England using a retrospective test-negative case-control study. Cases and controls were frequency matched by age, swabbing-week and region. On univariable and multivariable analysis adjusted for underlying clinical risk factors, cases were no more or less likely than controls to be vaccinated with 2008-09 or 2007-08 season TIV. Adjusted vaccine effectiveness for former was -6% (-43% to 22%). Vaccine effectiveness did not differ significantly by age-group or hospitalisation. There was no evidence prior vaccination with TIV significantly altered subsequent risk of pandemic influenza H1N1 2009 infection.
Copyright ? 2011. Published by Elsevier Ltd.
PMID: 21292008 [PubMed - as supplied by publisher]
http://www.ncbi.nlm.nih.gov/pubmed/21292008
No effect of 2008/09 seasonal influenza vaccination on the risk of pandemic H1N1 2009 influenza infection in England.
Pebody R, Andrews N, Waight P, Malkani R, McCartney C, Ellis J, Miller E.
Health Protection Agency Centre for Infections, 61 Colindale Avenue, UK.
Abstract
This study reports effectiveness of trivalent influenza vaccine (TIV) against confirmed pandemic influenza infection in England using a retrospective test-negative case-control study. Cases and controls were frequency matched by age, swabbing-week and region. On univariable and multivariable analysis adjusted for underlying clinical risk factors, cases were no more or less likely than controls to be vaccinated with 2008-09 or 2007-08 season TIV. Adjusted vaccine effectiveness for former was -6% (-43% to 22%). Vaccine effectiveness did not differ significantly by age-group or hospitalisation. There was no evidence prior vaccination with TIV significantly altered subsequent risk of pandemic influenza H1N1 2009 infection.
Copyright ? 2011. Published by Elsevier Ltd.
PMID: 21292008 [PubMed - as supplied by publisher]
http://www.ncbi.nlm.nih.gov/pubmed/21292008