Progress towards measles elimination, western hemisphere, 2002-2003.
D006801:Humans; D007223:Infant; D008457:Measles / Q000453:epidemiology / Q000517:prevention & control* / Q000635:transmission; D008458:Measles Vaccine; D008800:Mexico / Q000453:epidemiology; D010175:Pan American Health Organization; D014481:United States / Q000453:epidemiology
D008458:Measles Vaccine