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References

  • 1
    Lee N, Chan PK, Lui GC et al. Complications and outcomes of pandemic 2009 Influenza A (H1N1) virus infection in hospitalized adults: how do they differ from those in seasonal influenza? J Infect Dis 2011; 203:17391747.
  • 2
    Bautista E, Chotpitayasunondh T, Gao Z et al. Clinical aspects of pandemic 2009 influenza A(H1N1)virus infection. N Engl J Med 2010; 362:17081719.
  • 3
    Dawood FS, Iuliano AD, Reed C et al. Estimated global mortality associated with the first 12 months of 2009 pandemic influenza A H1N1 virus circulation: a modelling study. Lancet Infect Dis 2012; 12:687695.
  • 4
    Tse H, Kao RY, Wu WL et al. Structural basis and sequence co-evolution analysis of the hemagglutinin protein of pandemic influenza A/H1N1 (2009) virus. Exp Biol Med (Maywood) 2011; 236:915925.
  • 5
    Baldanti F, Campanini G, Piralla A et al. Severe outcome of influenza A/H1N1/09v infection associated with 222G/N polymorphisms in the haemagglutinin: a multicentre study. Clin Microbiol Infect 2011; 17:11661179.
  • 6
    Nunthaboot N, Rungrotmongkol T, Malaisree M et al. Evolution of human receptor binding affinity of H1N1 haemagglutinins from 1918 to 2009 pandemic influenza A virus. J Chem Inf Model 2010; 50:14101417.
  • 7
    Piralla A, Pariani E, Rovida F et al. Segregation of virulent influenza A(H1N1) variants in the lower respiratory tract of critically ill patients during the 2010-2011 seasonal epidemic. PLoS One 2011; 6:e283321.
  • 8
    Zehender G, Pariani E, Piralla A et al. Reconstruction of the evolutionary dynamics of the A(H1N1)pdm09 influenza virus in Italy during the pandemic and post-pandemic phases. PLoS One 2012; 7:e47517.
  • 9
    Ilyushina NA, Khalenkov AM, Seiler JP et al. Adaptation of pandemic H1N1 influenza viruses in mice. J Virol 2010; 84:86078616.
  • 10
    Kilander A, Rykkvin R, Dudman SG, Hungnes O. Observed association between the HA1 mutation D222G in the 2009 pandemic influenza A(H1N1) virus and severe clinical outcome, Norway 2009-2010. Euro Surveill 2010; 15:13.
  • 11
    Ellis J, Galiano M, Pebody R et al. Virological analysis of fatal influenza cases in the United Kingdom during the early wave of influenza in winter 2010/11. Euro Surveill 2011; 16:pii 19760.
  • 12
    Baldanti F, Zanetti A. Letter to the editor. Virological analysis of fatal influenza cases in the United Kingdom during the early wave of influenza in winter 2010/11. Euro Surveill 2011; 16:pii 19774.
  • 13
    Ledesma J, Pozo F, Ruiz MP et al. Substitutions in position 222 of haemagglutinin of pandemic influenza A (H1N1) 2009 viruses in Spain. J Clin Virol 2011; 51:7578.
  • 14
    Puzelli S, Facchini M, Spagnolo D et al. Transmission of hemagglutinin D222G mutant strain of pandemic (H1N1) 2009 virus. Emerg Infect Dis 2010; 16:863865.
  • 15
    World Health Organization. Pandemic (H1N1) 2010: Available at www.cdc.gov/h1n1flu/guidance/ (Accessed 6 October 2009).
  • 16
    Gascuel O. BIONJ: an improved version of the NJ algorithm based on a simple model of sequence data. Mol Biol Evol 1997; 14:685695.
  • 17
    Guindon S, Gascuel O. PhyML: a simple, fast and accurate algorithm to estimate large phylogenies by maximum likelihood. Syst Biol 2003; 52:696704.
  • 18
    Guindon S. PhyTime: “Bayesian estimation of divergence times from large sequence alignments”. Mol Biol Evol 2010; 27:17681781.
  • 19
    R Core Team: R: A Language and Environment for Statistical Computing. Vienna, Austria: R Foundation for Statistical Computing, 2013. Available at http://www.R-project.org/ (Release 2.15.1, Accessed 22 June 2012).
  • 20
    Charif D, Lobry JR: SeqinR 1.0-2: A contributed package to the R project for statistical computing devoted to biological sequences retrieval and analysis; in Bastolla U, Porto M, Roman HE, Vendruscolo M (ed.): Structural Approaches to Sequence Evolution. Berlin, Heidelberg: Springer Berlin Heidelberg, 2007; 207232.
  • 21
    Marzano A, Marengo A, Ruggiero T et al. Clinical impact of A/H1N1/09 influenza in patients with cirrhosis: experience from a nosocomial cluster of infection. J Med Virol 2013; 85:17.
  • 22
    Centers for Disease Control and Prevention (CDC). H1N1 flu. Updated CDC estimates of 2009 H1N1 influenza cases, hospitalizations and deaths in the United States, April 2009–April 10, 2010. Available at http://www.cdc.gov/h1n1flu/estimates_2009_h1n1.htm/ (Accessed 14 May 2010).
  • 23
    Drews SJ, Pabbaraju K, Wong S et al. Surveillance of autopsy cases for D222G substitutions in haemagglutinin of the pandemic (H1N1) 2009 virus in Alberta, Canada. Clin Microbiol Infect 2011; 17:582584.
  • 24
    Patroniti N, Zangrillo A, Pappalardo F et al. The Italian ECMO network experience during the 2009 influenza A(H1N1) pandemic: preparation for severe respiratory emergency outbreaks. Intensive Care Med 2011; 37:14471457.
  • 25
    Nicoll A, Ciancio BC, Lopez Chavarrias V et al. Influenza-related deaths-available methods for estimating numbers and detecting patterns for seasonal and pandemic influenza in Europe. Euro Surveill 2012; 7:pii: 20162.
  • 26
    Lyytikainen O, Kuusi M, Snellman M et al. Surveillance of influenza in Finland during the 2009 pandemic, 10 May 2009 to 8 March 2010. Euro Surveill 2011; 16:pii 19908.
  • 27
    Malato L, Llavador V, Marmier E et al. Pandemic influenza A(H1N1) 2009: molecular characterisation and duration of viral shedding in intensive care patients in Bordeaux, south-west France, May 2009 to January 2010. Euro Surveill 2011; 16:pii 19776.
  • 28
    Miller RR, MacLean AR, Gunson RN, Carman WF. Occurrence of haemagglutinin mutation D222G in pandemic influenza A(H1N1) infected patients in the West of Scotland, United Kingdom, 2009-10. Euro Surveill 2010; 15:pii 19546.
  • 29
    Potdar VA, Chadha MS, Jadhav SM, Mullick J, Cherian SS, Mishra AC. Genetic characterization of the influenza A pandemic (H1N1) 2009 virus isolates from India. PLoS One 2010; 5:e9693.
  • 30
    Melidou A, Gioula G, Exindari M, Chatzidimitriou D, Diza E, Malisiovas N. Molecular and phylogenetic analysis of the haemagglutinin gene of pandemic influenza H1N1 2009 viruses associated with severe and fatal infections. Virus Res 2010; 151:192199.
  • 31
    Zarychanski R, Stuart TL, Kumar A et al. Correlates of severe disease in patients with 2009 pandemic influenza (H1N1) virus infection. CMAJ 2010; 182:257264.
  • 32
    Chan PK, Lee N, Joynt GM et al. Clinical and virological course of infection with haemagglutinin D222G mutant strain of 2009 pandemic influenza A (H1N1) virus. J Clin Virol 2011; 50:320324.
  • 33
    Puzelli S, Facchini M, De Marco MA et al. Molecular surveillance of pandemic influenza A(H1N1) viruses circulating in Italy from May 2009 to February 2010: association between haemagglutinin mutations and clinical outcome. Euro Surveill 2010; 15:pii 19696.
  • 34
    Newhouse EI, Xu D, Markwick PR et al. Mechanism of glycan receptor recognition and specificity switch for avian, swine, and human adapted influenza virus hemagglutinins: a molecular dynamics perspective. J m Chem Soc 2009; 131:1743017442.
  • 35
    Liu Y, Childs RA, Matrosovich T et al. Altered receptor specificity and cell tropism of D222G hemagglutinin mutants isolated from fatal cases of pandemic A(H1N1) 2009 influenza virus. J Virol 2010; 84:1206912074.
  • 36
    Shinya K, Ebina M, Yamada S, Ono M, Kasai N, Kawaoka Y. Avian flu: influenza virus receptors in the human airway. Nature 2006; 440:435436.
  • 37
    Memoli MJ, Bristol T, Proudfoot KE, Davis AS, Dunham EJ, Taubenberger JK. In vivo evaluation of pathogenicity and transmissibility of influenza A(H1N1)pdm09 hemagglutinin receptor binding domain 222 intrahost variants isolated from a single immunocompromised patient. Virology 2012; 428:2129.
  • 38
    Nelson M, Spiro D, Wentworth D et al. The early diversification of influenza A/H1N1pdm. PLoS Curr 2009; 1:RRN1126.
  • 39
    El Moussi A, Ben Hadj Kacem MA, Pozo F et al. Genetic diversity of HA1 domain of haemagglutinin gene of influenza A(H1N1)pdm09 in Tunisia. Virol J. 2013; 10:150.
  • 40
    Selleri M, Piralla A, Rozera G et al. Detection of haemagglutinin D222 polymorphisms in influenza A(H1N1)pdm09-infected patients by ultra-deep pyrosequencing. Clin Microbiol Infect 2013; 19:668673.
  • 41
    Wedde M, Wählisch S, Wolff T, Schweiger B. Predominance of HA-222D/G polymorphism in influenza A(H1N1)pdm09 viruses associated with fatal and severe outcomes recently circulating in Germany. PLoS One 2013; 8:e57059.
  • 42
    Rykkvin R, Kilander A, Dudman SG, Hungnes O. Within-patient emergence of the influenza A(H1N1)pdm09 HA1 222G variant and clear association with severe disease, Norway. Euro Surveill 2013; 18:pii: 20369.