Portland and Clark County are starting the new year with two cases of the measles.
The Oregon Health Authority has confirmed another case of measles in Portland, just over a week after warning about a previous infection.
Oregon health officials announced a new measles threat in the Portland area on Saturday.
Updated: Friday, July 13, 2018 at 4:30 p.m.
Multnomah County is tracking a case of measles and has notified 500 people that they might have been exposed.
A baby who passed through Portland International Airport last week has since been diagnosed with measles, prompting officials to stress the importance of vaccinations against the virus.
While vaccination rates in the Portland area remain relatively high – about 95 percent, according to the Multnomah County Health Department – health officials are working with the child's primary care provider to make sure patients are notified of the exposure and to take appropriate follow up.