The study was approved by the Institutional Ethics Review Board of the University of Wuerzburg. Figure 2 ). Of all 94 patients, 88 (94%; 60% males, median 7 (2-12) years of age) were admitted to a general ward and stayed for a median of four (3-6) days in hospital. Six children (6%; 83% males, age range 0.1-16 years) were admitted to an intensive care unit (ICU), with a median stay at ICU of three (2-6) days and of seven (3-18) days in hospital. For 48 patients (51%), a contact with a person with suspected (n = 35) or confirmed (n = 29) PIA was reported as potential source of infection; most frequently, contacts to siblings (n = 30) or the child's mother (n = 15) had been documented.