Performance of eHealth Data Sources in Local Influenza Surveillance: A 5-Year Open Cohort Study - Timpka, Toomas; Spreco, Armin; Dahlström, Örjan; Eriksson, Olle; Gursky, Elin; Ekberg, Joakim; Blomqvist, Eva; Strömgren, Magnus; Karlsson, David; Eriksson, Henrik; Nyce, James; Hinkula, Jorma; et al. (Journal of medical Internet research, 2014)
Keywords: Adolescent; Adult; Age differences; Age Distribution; Aged; Aged, 80 and over; Analysis; Call centers; Child, Preschool; Cohort analysis; Cohort Studies; Coverage; Data Collection; Data sources; Disease Outbreaks; Diseases; Diversity; Evidence based; Health; Health information; Health Information Systems; Health services; Humans; Immunity; Infant; Infectious diseases; Influenza; Influenza A Virus, H1N1 Subtype; Influenza A Virus, H3N2 Subtype; Influenza, Human - epidemiology; Information systems; Internet; Laboratories; Local media; Mass Media; Media coverage; Medical informatics; Middle Aged; Necessity; Original Paper; Pandemics; Population Surveillance - methods; Public health; Search Engine; Software; Surveillance; Surveillance systems; Sweden - epidemiology; Telemedicine; Websites; Young Adult; Sweden; United States--US; influenza; infectious disease surveillance; website usage; open cohort design; Internet; Google Flu Trends; eHealth; public health; telenursing call centers