What is "mecacar"

Operation MECACAR (currently known as MECACAR New Millennium) is a multi-national immunization program launched in 1995 by the World Health Organization to coordinate polio vaccination efforts (currently it is also used to coordinated measles and rubella vaccination efforts). The name of the operation was derived from the names of the regions participating in the operation: Eastern Mediterranean, Caucasus, Central Asian Republics and Russia. Currently, 18 countries are participating and more than 60 million children have been vaccinated.