How does the incidence of measles vary by age?

Updated: Jun 06, 2019
  • Author: Selina SP Chen, MD, MPH; Chief Editor: Russell W Steele, MD  more...
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Answer

Of the 66 cases of measles reported in the United States in 2005, 7 (10.6%) involved infants, 4 (6.1%) involved children aged 1-4 years, 33 (50%) involved persons aged 5-19 years, 7 (10.6%) involved adults aged 20-34 years, and 15 (22.7%) involved adults older than 35 years. [20]

Among the 118 US patients reported to have measles between January 1 and May 20, 2011, age ranged from 3 months to 68 years. [22] More than half were younger than 20 years: 18 (15%) were younger than 12 months, 24 (20%) were 1-4 years old, 23 (19%) were 5-19 years old, and 53 (45%) were 20 years of age or older.


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