Age-Dependent Estimates of the Epidemiological Impact of Pandemic Influenza (H1N1-2009) in Japan
Figure 2
Influenza-like illness cases with medical attendance in Japan from 2009 to 2010. (a) The estimated number of influenza-like illness (ILI) cases with medical attendance is given for the period from week 28 in 2009 to week 10 in 2010, corresponding to the first wave of the 2009 pandemic. The estimated number was obtained from the reported number of ILI cases with medical attendance and the proportion of sentinel medical institutions among the total number of medical institutions across Japan. (b) The notified weekly number of influenza cases with medical attendance by prefecture. The datasets from a total of 19 prefectures in which the serological survey took place are shown.
