2Chen Y, Liang W, Yang S, et al. Human infections with the e- merging avian influenza A H7N9 virus from wet market poul- try: clinical analysis and characterisation of viral genome[J]. Lancet, 2013,381(9881) :1916-1925.
3Gao HN, Lu HZ, Cao B, et al. Clinical Findings in 111 Cases of Influenza A (HTN9) Virus Infection[J]. N Engl J Med, 2013,368(24) 2277 2285.
4Gao R,Cao B,Hu Y,et al. Human infection with a novel avi an-origin influenza A (HTN9) virus[J]. N Engl J Med,2013, 368(20) : 1888-1897.
5Skowrunski DM,Janjua NZ, Kwindt TL,et al. Virus-host in- teractions and the unusual age and sex distribution of human cases of influenzaA (HTN9) in China, April 2013 [J]. Euro Surveill, 2013,18 (17) 20465.
6Cowling BJ, Freeman G, Wong JY, et al. Preliminary infer- ences on the age-specific seriousness of human disease caused by avian influenza A(H7N9) infections in China, March to A- pril 2013[J]. Euro Surveill, 2013,18(19) 20475.
7Liu D,Shi W,Shi Y,et al. Origin and diversity of novel avian influenza A H7N9 viruses causing human infection: phyloge netic, structural, and coalescent analyses[J]. Lancet, 2013, 381(9881) : 1926-1932.