[Influenza epidemics and their evaluation].
Influenza has a typical seasonal outbreak pattern during the winter in Japan. During this period, a number of information on influenza is available through many institutions including the Ministry of Health and Welfare(MHW). The information is collected through different systems for different purposes. Therefore the information required different interpretation. Using the information systems of the MHW as an example, the point for interpretation and the limitation for these data sets are analysed.
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D004196:Disease Outbreaks; D004812:Epidemiologic Methods; D006801:Humans; D007251:Influenza, Human / Q000453:epidemiology*