A good slide presentation on measles by the CDC–
https://www.cdc.gov/measles/downloads/MeaslesDataAndStatsSlideSet.pdf
p. 3: 1985 had 1.2 MILLION deaths worldwide from measles. By 2016 this number was <100,000; an estimated 20.4 MILLION lives saved, and deaths were reduced 84%.
p. 4: before 1963, in the US there were 48,000 hospitalizations from measles; 4,000 developed encephalitis; and there were 450-500 deaths a year.
You tell me: Does the vaccine work? Is it worth the small risk of a reaction to get the vaccine?