However, some of the people infected with the virus have visited public places like the Portland International Airport, and Washington Department of Health epidemiologist Dr. Scott Lindquist says the outbreak is expected to move across the state.
The latest update from the county's health department said that 23 measles cases have been confirmed and two more suspected cases are under investigation, CBS News reported.
In 2000, the US healthcare department announced that measles has been eliminated because of a well-distributed vaccination program.
State health officials say a case of the measles has been confirmed in a resident of Multnomah County, which is home to Portland.
So far, Clark County Public Health has found that 20 of those with the disease had not been immunized.
Officials in Washington declared a measles outbreak earlier this week after 22 people had become infected. As of yesterday, there are 25 confirmed cases in Clark County and one confirmed case in King County.More news: Mario Draghi Sounds Economic Alarm for the Euro-Area
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Immunization is the best prevention for measles. In 1998, Andrew Wakefield released a paper claiming to have linked the measles, mumps, and rubella (MMR) vaccine to the onset of autism.
People who choose not to vaccinate their children are underestimating the dangers of the illness, said Melnick, who himself had measles as a child, before the vaccine was commonplace.
To date, a single case of measles was reported in BC in 2019 in an adult traveller returning from the Philippines.
In BC, children receive two doses of measles-containing vaccine during routine immunization, with the first at 12 months of age and the second at four years of age or school entry. One dose of the measles vaccine is about 93 percent effective at preventing measles. The measles virus can remain in the air for up to two hours after someone leaves the area. "The people who are clearly at risk of infection are those who have never been vaccinated against measles".
It can cause fever, running rose and watery, inflamed eyes along with small red spots with white or bluish centres in the mouth and a dusky red, blotchy rash that begins on the face and spreads according to the BCCDC. Serious complications such pneumonia and brain infections can arise from the disease in some cases.