Source: Morbidity and Mortality Weekly Report | Vol:Vol. 62 | Page: 741
Health experts declared measles to be eliminated in the United States in 2000, but cases continue to be imported into the country. During 2001-2012, the median annual number of measles cases reported in the United States was 60, including 26 imported cases. But in just the period from January 1 through August 24 of this year, 159 cases of measles were reported. Most cases occurred in persons who were unvaccinated or had an unknown vaccination status. There were 42 importations reported, half of which were from the World Health Organization European Region. Eight outbreaks accounted for 77 percent of this year’s cases, with the largest outbreak occurring in New York City. An ongoing outbreak in Texas involves 20 confirmed cases reported as of August 24, 17 of them involving unvaccinated patients under one year of age. These cases demonstrate how unvaccinated persons can put communities at risk of the disease and how high vaccination coverage can help prevent the spread of measles after importation.