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Volume 15, Number 10—October 2009

Research

Lack of Airborne Transmission during Outbreak of Pandemic (H1N1) 2009 among Tour Group Members, China, June 2009

Ke Han1, Xiaoping Zhu1, Fan He1, Lunguang Liu, Lijie Zhang, Huilai Ma, Xinyu Tang, Ting Huang, Guang ZengComments to Author , and Bao-Ping Zhu
Author affiliations: Chinese Center for Disease Control and Prevention, Beijing, People’s Republic of China (K. Han, F. He, L. Zhang, H. Ma, G. Zeng, B.-P. Zhu); Guangdong Center for Disease Control and Prevention, Guangzhou, People’s Republic of China (K. Han); Zhejiang Center for Disease Control and Prevention, Hangzhou, People’s Republic of China (F. He); Sichuan Center for Disease Control and Prevention, Sichuan, People’s Republic of China (X. Zhu, L. Liu, X. Tang, T. Huang)

Main Article

Table 1

Secondary attack rate for influenza A pandemic (H1N1) 2009, by travel history, Sichuan Province, China, June 2009

Group Total no. persons No. cases Attack rate, %
Passengers on flight CA428 (Hong Kong–Chengdu), June 2 91 0 0
Passengers on flight CZ6659 (Chengdu–Jiuzhaigou), June 3 110 7 6.4
Members of the tour group 23 7 30
Not members of the tour group 87 0 0
Members of the tour group, not passengers of flight CZ6659 (Chengdu–Jiuzhaigou), June 3 7 2 29
Passengers on flight CZ6660 (Jiuzhaigou–Chengdu), June 5, not members of the tour group 87 1 1.1

Main Article

1These authors contributed equally to this article.

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