A/ck/Japan/1924(H7N7)A/FPV/Rostock/1934(H7N1)

A/fowl/Dobson/27(H7N7)A/fowl/Weybridge/1934(H7N7)

A/sw/Iowa/15/1930(H1N1)A/sw/1976/1931(H1N1)

A/Wilson-Smith/1933(H1N1)A/Bellamy/1942(H1N1)

A/PuertoRico/8/34(H1N1)A/Melbourne/1935(H1N1)

A/ForWarren/1/1950(H1N1)A/USSR/90/1977(H1N1)

A/Japan/305/1957(H2N2)A/AnnArbor/6/1960(H2N2)

A/SaoPaolo/3/1959(H2N2)

A/ck/Scotland/1959(H5N1)A/dk/UKR/1/1963(H3N8)

A/England/1/61(H2N2)A/Yokosuka/3/62(H2N2)

A/sw/Wisconsin/2/1966(H1N1)A/sw/Wisconsin/1/1967(H1N1)

A/Tokyo/3/1967(H2N2)A/England/878/1969(H3N2)

A/tk/Ontario/6118/1968(H8N4)A/m.dk/ALB/761/1978(H6N8)

A/Aichi/2/1968(H3N2)A/HongKong/1/1968(H3N2)

A/sw/Illinois/1/1975(H1N1A/NewJersey/8/1976(H1N1)

A/eq/Newmarket/1/77(H7N7)

A/gs/HongKong/23/1978(H5N3)A/sw/China/8/1978(H3N2)

A/tk/SD/7034/1986(H1N1)A/tk/MO/21939/1987(H1N1)

A/oc/Germany/87(H1N1)

A/sw/Memphis/1/1990(H1N1)A/WI/4754/94(H1N1)

A/NewYork/621/1995(H1N1)A/W.Australia/77/2005(H1N1)

A/sw/Saitama/1996(H1N2)

A/Yokohama/22/2002(H1N2)A/sw/Ontario/52156/03(H1N2)

A/sw/Spain/51915/2003(H1N1)A/sw/Ger.Gran./2004(H1N2)

A/Kobe/1/2009(H1N1)A/California/04/2009(H1N1)

A/Ohio/UR07-0031/2008(H3N2)

A/NewYork/3237/2009(H1N1)

A/ck/Germany/n/1949(H10N7)

A/eq/Prague/1/1956(H7N7)

A/sw/Alberta/OTH-33-8/2009(H1N1)

A/sw/Korea/H.S./2004(H1N2)

A/sw/Thai.Rat./2000(H1N1)

A/sw/Wisconsin/458/98(H1N1)

A/sw/Pingtung/7-12/1999(H1N2)

A/sw/England/WVL14/1996(H1N1)A/sw/Belgium/WVL5/1989(H1N1)

A/sw/Wisconsin/1/1961

A/dk/England/1956(H11N6)

A/ck/Brescia/1902(H7N7)

A/dk/HongKong/319/1978(H2N2)A/dk/C.S./1956(H4N6)

A/BrevigMission/1/18(H1N1)

A/HongKong/7/1985(H3N2)A/Memphis/1/1977(H3N2)A/sw/Colorado/1/1977(H3N2)A/sw/Italy/1850/1977(H3N2)

A/Chiba/5/71(H3N2)

A/Kumamoto/1/1965(H2N2)

A/Leningrad/134/17/1957(H2N2)

A/Malaysia/1954(H1N1)

A/FortMonmouth/1/47(H1N1)

0.000.100.200.300.40

Garten, R. J., C. T. Davis, et al. (2009). "Antigenic and Genetic Characteristics of Swine-Origin 2009 A(H1N1) InfluenzaViruses Circulating in Humans." Science.http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=PubMed&dopt=Citation&list_uids=19465683

Jackson, D., M. J. Hossain, et al. (2008). "A new influenza virus virulence determinant: the NS1 protein four C-terminalresidues modulate pathogenicity." Proc Natl Acad Sci U S A 105(11): 4381-6.http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=PubMed&dopt=Citation&list_uids=18334632