The simultaneous immunization weeks, which began in the Americas in 2003, expanded to the European Region in 2005, and start this year in the Eastern Mediterranean, promote national and cross-border activities in a collaborative effort to prevent disease and save lives. Many countries are working to eliminate measles, and most are expanding vaccination to reach those who have been excluded up to now. In Europe, organizers say, "The European Region is experiencing stalling momentum in (…)