[1] Univ Pittsburgh, Med Ctr, Div Infect Dis, Pittsburgh, PA 15260 USA
[2] Natl Inst Infect Dis, Dept Bacterial Pathogenesis & Infect Control, Tokyo, Japan
[3] Univ Sao Paulo, LIM03, Hosp Clin, Div Pathol, Sao Paulo, Brazil
[4] Hosp Alianca, Salvador, BA, Brazil
[5] Univ Queensland, Royal Brisbane & Womens Hosp, Brisbane, Qld, Australia