[1] Univ Geneva Hosp, Infect Control Program, Geneva, Switzerland
[2] Fac Med, Geneva, Switzerland
[3] Royal Prince Alfred Hosp, Dept Infect Dis, Sydney, NSW, Australia
[4] Royal Prince Alfred Hosp, Dept Microbiol, Sydney, NSW, Australia
[5] Mahidol Univ, Fac Trop Med, Mahidol Oxford Trop Med Res Unit, Bangkok, Thailand
[6] Univ Oxford, Nuffield Dept Clin Med, Ctr Clin Vaccinol & Trop Med, Oxford, England
[7] Univ Antwerp, Vaccine & Infect Dis Inst, Dept Med Microbiol, Antwerp, Belgium
[8] Grp Hosp Paris St Joseph, Infect Control Unit, Paris, France
[9] Laikon Gen Hosp, Dept Propaedeut Med 1, Athens, Greece
[10] Clin Ctr Serbia, Dept Hosp Epidemiol, Belgrade, Serbia
[11] Univ Klinikum Aachen, Dept Infect Control & Infect Dis, Aachen, Germany
[12] Hosp Clin Barcelona, Infect Dis Serv, Barcelona, Spain
[13] Univ Hosp Bellvitge, Prevent Med Dept, Bellvitge Biomed Res Inst IDIBELL, Barcelona, Spain
[14] Univ Hosp Bellvitge, Fac Med, Bellvitge Biomed Res Inst IDIBELL, Barcelona, Spain
[15] Ist Ospitalieri Cremona, Infect & Trop Dis Unit, Cremona, Italy
[16] Ninewells Hosp, Infect Control Dept, Dundee DD1 9SY, Scotland
[17] Beilinson Med Ctr, Rabin Med Ctr, Unit Infect Control, Petah Tikwa, Israel
[18] Inst Pasteur, INSERM, U657, F-75724 Paris, France
[19] Univ Paris Est Creteil, Dept Intens Care, Hop Henri Mondor, Creteil, France