Pandemic Influenza Virus Surveillance, Izu-Oshima Island, Japan
, Kouji Sudo, Shingo Kato, Hiroshi Deguchi, Manabu Ichikawa, Tadanori Shimizu, Tadami Maeda, Shuhei Fujimoto, Toru Takebayashi, and Tomoya Saito2
Author affiliations: Author affiliations: Keio University Global Security Research Institute, Tokyo, Japan (T. Inamasu, K. Sudo, S. Kato, H. Deguchi, T. Saito); Keio University School of Medicine, Tokyo (K. Sudo, S. Kato, T. Takebayashi, T. Saito); Tokyo Institute of Technology, Kanagawa, Japan (H. Deguchi, M. Ichikawa); Oshima Medical Center, Tokyo (T. Shimizu); Maeda Internal Medicine Clinic, Tokyo (T. Maeda); Tokai University School of Medicine, Kanagawa (S. Fujimoto)
Figure 2. . . . Cumulative incidence of influenza A(H1N1)pdm09 infections by age group during the 2009–10 season. The cumulative incidence of A(H1N1)pdm09 infections for 2009–10 was calculated for the sum of A(H1N1)pdm09 virus cases among residents on Izu-Oshima Island, Japan, divided by the population at the end of December 2009 and plotted by week in the 2009–10 season. The numbers adjacent to the lines indicate the age groups, in years.
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