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Volume 16, Number 5—May 2010

Research

Influenza Outbreaks during World Youth Day 2008 Mass Gathering

Christopher C. Blyth1Comments to Author , Hong Foo, Sebastiaan J. van Hal, Aeron C. Hurt, Ian G. Barr, Kenneth McPhie, Paul K. Armstrong, William D. Rawlinson, Vicky Sheppeard, Stephen Conaty, Michael Staff, Dominic E. Dwyer, and on behalf of the World Youth Day 2008 Influenza Study Group2
Author affiliations: Westmead Hospital, Sydney, New South Wales, Australia (C.C. Blyth, H. Foo, S.J. van Hal, K. McPhie, D.E. Dwyer); WHO Collaborating Centre for Influenza Reference and Research, Melbourne, Victoria, Australia (A.C. Hurt, I.G. Barr); New South Wales Department of Health, Sydney (P.K. Armstrong); Prince of Wales Hospital, Sydney (W.D. Rawlinson); Sydney West Public Health Unit, Paramatta, New South Wales, Australia (V. Sheppeard); Sydney South West Public Health Unit, Camperdown, New South Wales, Australia (S. Conaty); North Sydney Central Coast Public Health Unit, Hornsby, New South Wales, Australia (M. Staff)

Main Article

Figure 3

Phylogenetic trees illustrating relatedness of hemagglutinin sequences from influenza A (H1N1) (A), A (H3N2) (B), and B/Malaysia-like viruses (C) from pre–World Youth Day 2008 (WYD2008) Australian isolates (●), WYD2008 isolates (†), post-WYD2008 Australian isolates (▲), and related international isolates. Trees were constructed by using maximum-likelihood (DNAml) in PHYLIP. Only bootstrap values >60 are included.

Figure 3. Phylogenetic trees illustrating relatedness of hemagglutinin sequences from influenza A (H1N1) (A), A (H3N2) (B), and B/Malaysia-like viruses (C) from pre–World Youth Day 2008 (WYD2008) Australian isolates (●), WYD2008 isolates (†), post-WYD2008 Australian isolates (▲), and related international isolates. Trees were constructed by using maximum-likelihood (DNAml) in PHYLIP. Only bootstrap values >60 are included.

Main Article

1Current affiliation: University of Western Australia, Perth, Australia.

2Other members of the World Youth Day Study Group: V. Sintchenko, G.L. Gilbert (Westmead Hospital); N. Komadina, R. Shaw (WHO Collaborating Centre for Influenza):S. Adamson, J. Fizzell (New South Wales Health–Biopreparedness Centre); P.M. Fennell, F. Ba Alawi (Prince of Wales Hospital); S. Corbett, K. Weston, G. Truman, O. Nguyen, J. Paterson, S. Gabriel, C. Moreira, B. Forssman (Sydney West Public Health Unit); M. Cretikos, P. Maywood, V. Bowden, C. Lowbridge (Sydney South West Public Health Unit); and S. Williams, M. Torres, L. Heron (North Sydney Central Coast Public Health Unit).

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