PORTLAND, Ore. — Health officials are expected to declare the end of a measles outbreak in Clark County next week.
NBC News reports the announcement depends on whether there are any new cases over the weekend. Clark County Public Health has said it will declare the outbreak over after 42 days, which is two incubation periods, without new cases.
The last confirmed case was on March 18, which means Monday, April 29, would be 42 days since the most recent confirmed case, barring any new cases.
There have been a total of 73 confirmed measles cases since the outbreak began in January.
Of the people found with the virus, 63 were unvaccinated and three people received one dose of the MMR vaccine.
Washington Gov. Jay Inslee declared a state of emergency on Jan. 25 in response to the outbreak.
The outbreak spread to Oregon, where health officials said four Multnomah County residents had gotten measles, and the cases were linked to the Washington outbreak.
The CDC reported this week that measles in the U.S. has climbed to its highest level in 25 years, closing in on 700 cases this year alone. The resurgence was largely attributed to misinformation that is turning parents against vaccines, according to health officials.