measles vaccination survey 20% Exit Survey The CDC defines a measles outbreak by how many linked cases of measles? Measles was declared 'eliminated' in the USA in the year 2000, what does 'eliminated' mean in this context? It's completely arbitrary and not based on anything. There were no cases of measles in the year 2000 in the USA. There were no outbreaks of measles in the year 2000 in the USA. Measles was no longer endemic in the USA. Other close Close Host : qprun6.questionpro.net