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Volume 19, Number 8—August 2013

Monitoring Avian Influenza A(H7N9) Virus through National Influenza-like Illness Surveillance, China

Cuiling Xu, Fiona Havers, Lijie Wang, Tao Chen, Jinghong Shi, Dayan Wang, Jing Yang, Lei Yang, Marc-Alain Widdowson, and Yuelong ShuComments to Author 
Author affiliations: Chinese Center for Disease Control and Prevention, Beijing, China (C. Xu, L. Wang, T. Chen, J. Shi, D. Wang, J. Yang, L. Yang, Y. Shu); US Centers for Disease Control and Prevention, Atlanta, Georgia, USA. (F. Havers, M.-A. Widdowson)

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Table 2

Number of ILI patients positive for avian influenza A(H7N9) virus in areas with confirmed infections among humans, China, March 4–April 28, 2013*

Area† No. positive/no. tested
Anhui 1/3,478
Beijing 0/1,392
Fujian 0/1,154
Henan 0/1,893
Hunan‡ 1/1,912
Jiangsu 2/3,369
Jiangxi 1/1,588
Shandong 0/1,848
Shanghai 1/2,490
Zhejiang 0/1,615
Total 6/20,739

*ILI, influenza-like illness.
†All areas are provinces, except Beijing Municipality.
‡Positive patient, a resident of Shanghai, stayed for 2–3 d in Hunan, where he visited the sentinel hospital and then returned to Shanghai.

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Page created: July 19, 2013
Page updated: July 19, 2013
Page reviewed: July 19, 2013
The conclusions, findings, and opinions expressed by authors contributing to this journal do not necessarily reflect the official position of the U.S. Department of Health and Human Services, the Public Health Service, the Centers for Disease Control and Prevention, or the authors' affiliated institutions. Use of trade names is for identification only and does not imply endorsement by any of the groups named above.