| Date | December 31, 2018 |
|---|---|
| Location | Portland metropolitan area and Hawaii |
| Coordinates | 45°38′N 122°36′W / 45.633°N 122.600°W |
| Type | Outbreak |
| Cause | Measles morbillivirus and vaccine hesitancy |
| First reporter | Public Health Department of Clark County |
| Outcome | Clark County public health emergency (January 18, 2019); Washington state of emergency (January 25, 2019) |
| Website | www |
In early months of 2019, a measles outbreak occurred in the Portland metropolitan area, including the Clark County, Washington suburbs, in the United States. At the time, the outbreak was the largest outbreak in more than two decades;[1] outbreaks in 2019 in areas including Brooklyn[2] and Rockland County, New York[3] have since seen far greater numbers of cases.
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