5Dawood FS, Seema J, Lyn F, et al. Emergence of a novel swine-origin influenza A (H1N1) virus in humans. N Engl J Med, 2009,360 (25) : 2605-2615.
6Human infection with new influenza A (H1N1) virus: clinical observations from a school-associated outbreak in Kobe, Japan, May 2009. Wkly Epidemiol Rec, 2009,84 (24) :237-244.
7Shimada T, Gu Y, Kamiya H, et al. Epidemiology of influenza A (H1N1)virus infection in Japan, May-June 2009. Euro Surveill, 2009,14(24) pii: 19244.
8Health Protection Agency, Health Protection Scotland, National Public Health Service for Wales, et al. Epidemiology of new influenza A (H1N1) virus infection, United Kingdom, April-June 2009. Euro Surveill,2009,14(22) : pii: 19232.
9Rizzo C, Declich S, Bella A, et al. Enhanced epidemiological surveillance of influenza A (H1N1) v in Italy. Euro Surveill, 2009,14(27)pii: 19266.
10Khan K, Arino J, Hu W, et al. Spread of a novel influenza A (H1N1) virus via global airline transportation. N Engl J Med, 2009,361(2):212-214.