This is the latest data on the outbreaks of measles in the United States in 2015. The illnesses tied to Disneyland are noted separately. Data is unofficial.
Because the count is from mid-December, 2014, to 2015, the assignment of some cases to a calendar year is in flux. In addition, we are confirming, with some difficulty, which states will be assigned which cases. The Mitchell, ND outbreak is an example. It consists of 13 cases over both years with at least three recorded in a state other than North Dakota.