Table 1.

Clinical characteristics of measles cases between 2001 and 2019.

Characteristics, n = 19	Numbers
Overall cases
Total	3874
Median/year [IQR]	86 [55–188]
US resident cases
Total	3506
Median/year [IQR]	65 [42–178]
Imported cases
Total	734
Median/year [IQR]	27 [21–54]
Imported cases percentage (%)
Median/year [IQR]	36 [17.9–46.6]
US residents vaccinated cases, n = 16
Median/year [IQR]	10 [7–27]
US residents vaccinated percentage (%), n = 16
Median/year [IQR]	15.1% [12.1–23.2]
Outbreaks
Total	160
Median/year [IQR]	6 [4–10]
States affected
Median/year [IQR]	18 [16–23]
Deaths
Total	8
Percentage of vaccine refusal due to religious beliefs (%), n = 6
Median/year [IQR]	66.7% [44–67]
Range	36—76