title: Epidemiology of fatal cases associated with pandemic H1N1 influenza 2009.
abstract: This article describes the characteristics of 574 deaths associated with pandemic H1N1 influenza up to 16 July 2009. Data (except from Canada and Australia) suggest that the elderly may to some extent be protected from infection. There was underlying disease in at least half of the fatal cases. Two risk factors seem of particular importance: pregnancy and metabolic condition (including obesity which has not been considered as risk factor in previous pandemics or seasonal influenza).
authors.affiliation: French Institute for Public Health Surveillance (Institut de Veille Sanitaire, InVS), St Maurice, France.
authors.forename: L
authors.initials: L
authors.lastname: Vaillant
authors.forename: G
authors.initials: G
authors.lastname: La Ruche
authors.forename: A
authors.initials: A
authors.lastname: Tarantola
authors.forename: P
authors.initials: P
authors.lastname: Barboza
mesh_terms: D000328:Adult; D017677:Age Distribution; D000368:Aged; D002648:Child; D004196:Disease Outbreaks / Q000706:statistics & numerical data*; D005260:Female; D006801:Humans; D015994:Incidence; D053118:Influenza A Virus, H1N1 Subtype; D007251:Influenza, Human / Q000453:epidemiology*; D038622:Internationality; D011247:Pregnancy; D018570:Risk Assessment; D012307:Risk Factors; D017678:Sex Distribution; D016019:Survival Analysis; D015996:Survival Rate