Ninety-seven events of interest (of 2365 events captured in MLI syndromes) were identified: 32 rash, 58 febrile rash, 1 prodrome, 12 case definition and 8 measles/testing (14 were categorized in ! 1 syndrome). Eighty-four events of interest were ruled out based on chart findings. Thirteen events of high suspicion for measles required further investigation. Twelve events were ruled out based on negative measles IgM results, evidence indicating other diseases (fifth disease and Kawasaki syndrome), vaccine reaction or inaccurate documentation of clinical symptoms. One event was found to be confirmed by positive measles IgM (Fig. 1) .