[1] Royal Womens Hosp, Dept Microbiol & Infect Dis, Melbourne, Vic, Australia
[2] Murdoch Childrens Res Inst, Melbourne, Vic, Australia
[3] Univ Melbourne, Dept Obstet & Gynaecol, Melbourne, Vic 3010, Australia
[4] Royal Childrens Hosp, Dept Microbiol, Melbourne, Vic, Australia
[5] Univ Melbourne, Melbourne Sch Populat Hlth, Melbourne, Vic 3010, Australia
[6] Melbourne Sexual Hlth Ctr, Melbourne, Vic, Australia
[7] Monash Univ, Dept Epidemiol & Prevent Med, Melbourne, Vic 3004, Australia