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Volume 20, Number 9—September 2014
Dispatch

Asymptomatic, Mild, and Severe Influenza A(H7N9) Virus Infection in Humans, Guangzhou, China

Zongqiu Chen1, Hui Liu1, Jianyun Lu1, Lei Luo1, Kuibiao Li, Yufei Liu, Eric H.Y. Lau, Biao Di, Hui Wang, Zhicong Yang2, and Xincai Xiao2Comments to Author 
Author affiliations: Guangzhou Center for Disease Control and Prevention, Guangzhou, China (Z. Chen, H. Liu, J. Lu, L. Luo, K. Li, Y. Liu, B. Di, H. Wang, Z. Yang, and X. Xiao); University of Hong Kong, Hong Kong, China (E.H.Y. Lau)

Main Article

Figure 1

Weekly number of confirmed influenza A(H7N9) cases, percentage of pneumonia patients with pneumonia of unknown etiology (PUE), and percentage of patients with influenza-like illness (ILI) tested for influenza A(H7N9), Guangzhou, China, April 1, 2013–March 7, 2014. For PUE and ILI surveillance in Guangzhou, laboratory testing for influenza A(H7N9) virus using real-time reverse transcription PCR was implemented in week 14 of 2013 (April 1, 2013). ILI surveillance was expanded to 19 sentinel hospit

Figure 1. Weekly number of confirmed influenza A(H7N9) cases detected by real-time reverse transcription PCR, percentage of pneumonia patients with pneumonia of unknown etiology (PUE), and percentage of patients with influenza-like illness (ILI) tested for influenza A(H7N9), Guangzhou, China, April 1, 2013–March 7, 2014. For PUE and ILI surveillance in Guangzhou, laboratory testing for influenza A(H7N9) virus using real-time reverse transcription PCR was implemented in week 14 of 2013 (April 1, 2013). ILI surveillance was expanded to 19 sentinel hospitals in week 44 (November 2013), according to the requirements of the public health authority of Guangdong Province after 4 confirmed influenza A(H7N9) cases were reported in Guangdong.

Main Article

1These first authors contributed equally to this article.

2These senior authors contributed equally to this article.

Page created: August 14, 2014
Page updated: August 14, 2014
Page reviewed: August 14, 2014
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