Figure. Hemolytic uremic syndrome (HUS) cases by date of symptom onset (A), date of diagnosis (B), date of notification (C) (i.e., the date that the local health department was notified of the case), and date of reporting (D) (i.e., the date that the Robert Koch Institute received the report of the case from the local health department) during outbreak of Shiga toxin–producing Escherichia coli infection and HUS, May–June 2011, Germany. Vertical lines indicate May 19, when the Robert Koch Institute received reports about a cluster of HUS cases in children. Dark gray bars represent outbreak-related cases; white bars represent cases not related to the outbreak. Only cases with available information are represented.