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Volume 15, Number 10—October 2009
Research

Review of an Influenza Surveillance System, Beijing, People’s Republic of China

Peng Yang, Wei Duan, Min Lv, Weixian Shi, Xiaoming Peng, Xiaomei Wang, Yanning Lu, Huijie Liang, Holly Seale, Xinghuo Pang, and Quanyi WangComments to Author 
Author affiliations: Beijing Center for Disease Prevention and Control, Beijing, People’s Republic of China (P. Yang, W. Duan, M. Lv, W. Shi, X. Peng, X. Wang, Y. Lu, H. Liang, X. Pang, Q. Wang); University of New South Wales, Sydney, New South Wales, Australia (H. Seale)

Main Article

Figure 6

Weekly illness-like illness (ILI) counts by Early Aberration Response System to detect the onset of the influenza epidemic during the 2007–08 season, Beijing, People’s Republic of China. Triangles and diamonds represent different alert situations—C1-mild (C1), C2-medium (C2), and C3-ultra (C3)—automatically generated by the reporting system: triangle, C2C3; open diamond, C3; and solid diamond, C1C2C3.

Figure 6. Weekly illness-like illness (ILI) counts by Early Aberration Response System to detect the onset of the influenza epidemic during the 2007–08 season, Beijing, People’s Republic of China. Triangles and diamonds represent different alert situations—C1-mild (C1), C2-medium (C2), and C3-ultra (C3)—automatically generated by the reporting system: triangle, C2C3; open diamond, C3; and solid diamond, C1C2C3.

Main Article

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