[1] St Vincents Hosp, Dept Infect Dis, Sydney, NSW, Australia
[2] Univ New South Wales, Sch Med Sci, Kensington, NSW, Australia
[3] Prince Wales Hosp, Div Serol & Virol, South Eastern Area Lab Serv, Sydney, NSW, Australia
[4] Prince Wales Hosp, Dept Haematol, Sydney, NSW, Australia
[5] Univ New South Wales, Sch Biotechnol & Biomol Sci, Kensington, NSW, Australia
[6] Prince Wales Hosp, Dept Infect Dis, Sydney, NSW, Australia