Numerous enteric illness outbreaks in CCCs have been reported, although investigations rarely identified a common source. Reports commonly cited person-to-person transmission or risk factors that increased the potential for transmission and illness [6] [7] [8] . These factors included inadequate hygiene related to diapering, toileting and hand-washing [9, 10] ; poor cleaning of environmental surfaces [6] ; improper food preparation [6] ; inadequate exclusion of ill children and staff [9, 10] ; and working or being cared for in a younger age group [7, 11] .