title: Incidence of influenza A(H1N1)pdm09 infection, United Kingdom, 2009-2011.
abstract: We conducted a longitudinal community cohort study of healthy adults in the UK. We found significantly higher incidence of influenza A(H1N1)pdm09 infection in 2010-11 than in 2009-10, a substantial proportion of subclinical infection, and higher risk for infection during 2010-11 among persons with lower preinfection antibody titers.
authors.forename: Saranya
authors.initials: S
authors.lastname: Sridhar
authors.forename: Shaima
authors.initials: S
authors.lastname: Begom
authors.forename: Alison
authors.initials: A
authors.lastname: Bermingham
authors.forename: Katja
authors.initials: K
authors.lastname: Hoschler
authors.forename: Walt
authors.initials: W
authors.lastname: Adamson
authors.forename: William
authors.initials: W
authors.lastname: Carman
authors.forename: Maria D
authors.initials: MD
authors.lastname: Van Kerkhove
authors.forename: Ajit
authors.initials: A
authors.lastname: Lalvani
mesh_terms: D000328:Adult; D000914:Antibodies, Viral / Q000276:immunology; D005260:Female; D049674:History, 21st Century; D006801:Humans; D015994:Incidence; D053118:Influenza A Virus, H1N1 Subtype / Q000302:isolation & purification; D007251:Influenza, Human / Q000453:epidemiology* / Q000266:history; D008137:Longitudinal Studies; D008297:Male; D062486:Public Health Surveillance; D012621:Seasons; D016036:Seroepidemiologic Studies; D006113:United Kingdom / Q000453:epidemiology; D055815:Young Adult
chemical_list: D000914:Antibodies, Viral
keywords: England; United Kingdom; adult; cohort studies; epidemiology; human influenza; incidence; influenza A(H1N1)pdm09; natural infection; pandemic influenza; pandemics; seroepidemiology; seroprevalence; viruses