| • | 1963-1967:  inactivated vaccine used for some people; may develop atypical measles syndrome |  
 | • | 1968-present:  only live vaccine now |  
 | • | same prodrome;  rash starts on wrists and ankles and spreads centripetally, usually sparing the face (may become vesicular, purpuric)  |  
 | • | ddx (for acral purpura): RMSF, glove and stocking purpura  |  
 | • | (vs. RMSF – only measles has pulmonary symptoms) |  
  
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