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Volume 19, Number 11—November 2013

Research

Use of National Pneumonia Surveillance to Describe Influenza A(H7N9) Virus Epidemiology, China, 2004–2013

Nijuan Xiang, Fiona Havers, Tao Chen, Ying Song, Wenxiao Tu, Leilei Li, Yang Cao, Bo Liu, Lei Zhou, Ling Meng, Zhiheng Hong, Rui Wang, Yan Niu, Jianyi Yao, Kaiju Liao, Lianmei Jin, Yanping Zhang, Qun Li, Marc-Alain Widdowson, and Zijian FengComments to Author 
Author affiliations: Chinese Center for Disease Control and Prevention, Beijing, China (N. Xiang, T. Chen, W. Tu, L. Li, Y. Cao, B. Liu, L. Zhou, L. Meng, Z. Hong, R. Wang, Y. Niu, J. Yao, K. Liao, L. Jin, Y. Zhang, Q. Li, Z. Feng); Centers for Disease Control and Prevention, Atlanta, Georgia, USA (F. Havers, M.-A. Widdowson); Centers for Disease Control and Prevention, USA/China, Beijing (Y. Song)

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Figure 1

Number of reported PUE cases, mainland China, January 2004–May 2013. SARS, severe acute respiratory syndromes; H5N1, Human infection with avian Influenza A(H5N1) virus; PUE: pneumonia of unknown etiology.

Figure 1. . Number of reported PUE cases, mainland China, January 2004–May 2013. SARS, severe acute respiratory syndromes; H5N1, human infection with avian influenza A(H5N1) virus; PUE, pneumonia of unknown etiology.

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