Volume 20, Number 1—January 2014
Synopsis
A Historical Perspective of Influenza A(H1N2) Virus
Figure

Figure. . Significant points in the history of influenza viruses that have contributed to the emergence of influenza A(H1N2) viruses in human and swine populations. The bird and swine symbols on the timeline indicate when transmission appeared to occur directly from either avian or swine source into the relevant population. The bird symbols on the 1957 and 1968 time-points indicate that the circulating viruses of the time reassorted with viruses of an avian source resulting in novel subtypes. Significant events leading to the emergence of A(H1N2) in the human population are above the timeline and in swine below the timeline. A(H1N2) viruses appearing in both human and swine populations are indicated in boldface. Genotypes of A(H1N2) emerging in the human population are: 1989 (China), human A(H3N2) virus with hemagglutinin (HA) from human A(H1N1); 2000 (worldwide), same genotype as 1989 virus; 2009 (India), human A(H3N2) virus with HA from A(H1N1pdm09); 2012 (United States), human-like H1, A(H1N1pdm09) matrix, remainder swine H3N2 triple reassortant. Virus origins: Cl-sw, classical swine; hu, human; sw, swine; av, avian; hu-like, human like; double, double reassortant, tripleR, triple reassortant.
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CrossRef reports the first page should be "e00201-12" not "201" in reference 7 "Taubenberger, Baltimore, Doherty, Markel, Morens, Webster, et al., 2012".
Medline reports the journal title should be "Influenza Other Respir Viruses" not "Influenza Other Respi Viruses" in reference 9 "Brockwell-Staats, Webster, Webby, 2009".
Reference has only first page number. Please provide the last page number if article is longer than one page. (in reference 10 "Kundin, 1970").
Medline reports the journal title should be "Influenza Other Respir Viruses" not "Influenza Other Respi Viruses" in reference 13 "Van Reeth, Brown, Durrwald, Foni, Labarque, Lenihan, et al., 2008".
CrossRef reports the year should be "2011" not "2013" in reference 16 "Lorusso, Vincent, Gramer, Lager, Ciacci-Zanella, 2013".
Medline reports the last page should be "132" not "31" in reference 16 "Lorusso, Vincent, Gramer, Lager, Ciacci-Zanella, 2013".
Medline reports the journal title should be "Influenza Other Respir Viruses" not "Influenza Other Respi Viruses" in reference 19 "Deng, Iannello, Smith, Watson, Barr, Daniels, et al., 2012".
CrossRef reports the year should be "2011" not "2013" in reference 21 "Brown, 2013".
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