[1] Univ Hosp Munster, Inst Hyg, Natl Consulting Lab Hemolyt Urem Syndrome, D-48149 Munster, Germany
[2] IZKF Munster, D-48149 Munster, Germany
[3] China CDC, Natl Inst Communicable Dis Prevent & Control, State Key Lab Infect Dis Prevent & Control, Beijing, Peoples R China
[4] Robert Koch Inst, Natl Reference Ctr Salmonella & Other Enter Patho, Branch Wernigerode, D-38855 Wernigerode, Germany
[5] Univ Hosp Munster, Dept Periodontol, D-48149 Munster, Germany