Those who think measles has been eradicated in the United States should think again. An outbreak in California and five other states is just the latest to be reported. According to the Centers for Disease Control, 644 cases were reported in 2014, the most since 2000. Measles were reported in Fairfield County in March 2014.
The most recent outbreak has been traced to a non-vaccinated visitor to Disneyland, and that has led to secondary cases being reported which is not surprising since measles is one of the most contagious of all infectious diseases.