Document Type: Research Article
Affiliations: 1: Department of Pathogenic Biology, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, Hubei, People’s Republic of China. 2: Division of Virology, Wuhan Centers for Disease Prevention and Control, Wuhan 430015, Hubei, People’s Republic of China. 3: Department of Hygiene, Sapporo Medical University School of Medicine, S-1 W-17, Chuo-ku, Sapporo 060-8556, Japan.
Publication date: November 21, 2011