1PeirisJSM,GuanY,MarkwellD,etal.Cocirculation of avian H9N2 and contemporary "Human"H3N2 in fluenza A viruses in pigs in Southeastern China:potential for geneti creassortment?[J] Journal of virology,October2001,p.9679～9686,vol.75,No.20.
2Guan,Y.,Shortridge,K.F.,Krauss,S.,Webster,R.G.Molecular char acterization of N9N2 influenza viruses;werethey the donorsof the "internal" genes of H5N1 viruses in Hong Kong?Proc.Natl.Acad.Sci.USA 1999,96(16):9363～9367.
3Cameron,K.R.,Gregory,V.,Banks,J.,Brown,I.H.,Alexander,D.J.,Hay,A.J.andLin,Y.P.(2000).H9N2 subtype influenza A viruses in poultry in Pakistan are closely related to the H9N2 viruses re sponsible for human infection in HongKong.Virology,276,36～41..
5Lee,C.W.,Song,C.S.,Lee,Y.J.,Mo,I.P.,Garcia,M.,Suarez,D.L.im,S.J.Sequence analysis of the haemagglutin in gene of H9N2Korean avian in fluenza viruses and assessment of the pathogenic potential of isolateMS96.AviaDis.2000,44(3):527～535.
6Alexander,D.J.Are view of avian influenza in different bird species.Vet Microbiol.2000,74(1-2)3～ 13.
7Mase,M.,Imada,T.,Sanada,Y.,Etoh,M.,Sanada,N.,Tsukarnoto,K.,Kawa oka,Y.,Yamaguchi,S Imported para keetsharbor H9N2 influenza A viruses thata regenetically closely related to those transmitted to humans in HongKong J.Virol.2001,75(7):3490～3494.
9LinYPM,ShawV,GregoryK,CameronW,LimA,KlimovK,Subbarao.Y,GuanS,KraussK,ShortridgeR,WebsterN,CoxandAHay.Avian-to-humant ransmission of H9N2 subtype influenza viruses:elationship between H9N2 and H5N1 humanisolates.Proc.Natl.Acad[J].Sci.USA2000,97(17):654 ～ 658..
10Choi,Y.K.,Ozaki,H.,Webby,R.J.,Webster,R.G.,Peiris,J.S.,Poon,L,Butt,C.,Leung,Y.H.C.,Guan.Y.on tinuing evolution of H9N2 influ enza viruses in southeastern China.J.Virol.2004,78(16):8609～8614.
