U.S. measles cases by year, 2001-2015

178 cases reported in 24 states and the District of Columbia: Arizona, California, Colorado, Delaware, Florida, Georgia, Illinois, Massachusetts, Michigan, Minnesota, Missouri, Nebraska, New Jersey, New York, Nevada, Ohio, Oklahoma, Pennsylvania, South Dakota, Texas, Utah, Virginia, Washington. 5 outbreaks respresenting 85% of reported cases this year. • The majority of people who got measles were unvaccinated. • Measles is still common in many parts of the world including some countries in Europe, Asia, the Pacific, and Africa. • Travelers with measles continue to bring the disease into the U.S. • Measles can spread when it reaches a community in the U.S. where groups of people are unvaccinated.

Stephen B. Thacker CDC Library collection