Public health experts recommend children get two doses of the MMR vaccine: the first when they're 12 months old, and a second between the ages of 4 and 6.
The governor has declared a public health emergency after 34 cases of the viral illness were confirmed. Authorities in neighboring OR and Idaho have issued warnings.
The BCCDC issued the warning over the weekend, saying that people who travel to Clark County, in Washington state just outside Portland, Oregon, are at potential risk of exposure to measles, because people with measles can infect others prior to the onset of symptoms like fever and rash.
But measles is still a big problem in other parts of the world. These exemptions have made OR and Washington "more susceptible to entirely preventable outbreaks", he told Vox.
As NPR reported, "In 2014, there were 667 cases in the U.S". Certain groups need two doses of MMR, including: college students, health care workers, global travelers, and persons at high risk for measles complications.
Denver Public Health and the Colorado Department of Public Health and Environment are attempting to contact people directly exposed to the individual.
The Kern County Public Health Department released a statement, "We are always concerned about measles". Texas is one of the worth offenders, but Washington state also has two metropolitan areas-Seattle and Spokane-that the study identified as hotspots of low vaccination coverage.
"If we even get one case, we'll declare an outbreak", said Davis.
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As one of our loyal readers, we ask you to be our partner. On Jan. 7 someone with measles was at Portland International airport, while another infected person went to the Portland Trail Blazers game on Jan. 11.
"It's all hands on deck".
MELNICK: What keeps me up at night is worrying that we're going to have a child die from this, something that's completely preventable. However, despite the national rate of vaccination, there are geographical clusters of unvaccinated people.
The number of measles cases in Rockland County has grown again to a high of 124 confirmed cases since the outbreak began in October.
Protection against measles can be substantially increased through vaccination. For more information about measles, see: bccdc.ca/health-info/diseases-conditions/measles on the BCCDC website.
Data on Portland's vaccination rate for both shots wasn't immediately available. The measles vaccine is 98 percent effective.
Virginia does allow vaccine exemptions for religious and medical reasons. If one sick child coughs in a room and leaves, another unvaccinated person has a 90 percent chance of catching the illness. Infected droplets from the individual with measles can spray into the air or land on a surface, where they remain active and contagious for hours. Officials believe the person was traveling internationally when they were exposed to measles.