Circulation of Reassortant Influenza A(H7N9) Viruses in Poultry and Humans, Guangdong Province, China, 2013
Changwen Ke, Jing Lu, Jie Wu, Dawei Guan, Lirong Zou, Tie Song, Lina Yi, Xianqiao Zeng, Lijun Liang, Hanzhong Ni, Min Kang, Xin Zhang, Haojie Zhong, Jianfeng He, Jinyan Lin, Derek Smith, David Burke, Ron A.M. Fouchier, Marion Koopmans, and Yonghui Zhang
Author affiliations: Guangdong Provincial Center for Disease Control and Prevention, Guangzhou, China (C. Ke, J. Lu, J. Wu, D. Guan, L. Zou, T. Song, L. Yi, X. Zeng, L. Liang, H. Ni, M. Kang, X. Zhang, H. Zhong, J. He, J. Lin, Y. Zhang); University of Cambridge, Cambridge, UK (D. Smith, D. Burke); Erasmus MC, Rotterdam, the Netherlands (R.A.M. Fouchier, M. Koopmans); National Institute of Public Health and the Environment, Bilthoven, the Netherlands (M. Koopmans)
Figure 1. Distribution of influenza A H9 (A) and H7 (B) viruses, Guandong Province, China, 2013–2014. Shading indicates percentage of environmental swab specimens from live poultry markets in each region that were positive for each influenza subtype by reverse transcription PCR. Circles indicate locations of human cases; larger circles indicate higher numbers of cases.
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