Measles is a highly contagious illness that can lead to serious complications and death. Although measles elimination was declared in the United States in 2000 since the first of this year 288 cases have been reported.
Nearly all the cases have been linked to travelers who caught the virus abroad and spread it in the United States among unvaccinated people. The most frequent sources of importations were unvaccinated U.S. travelers returning from abroad.
Vaccinations were declined because of religious, philosophical, or personal objections.