In just Washington state, there have been more than 45 confirmed cases of measles this year alone.
Of the 49 cases confirmed, 42 had not been immunized against the highly contagious virus.
"If you think you or someone in your family has measles, you should call your doctor's office and check in before leaving your home, try to stay away from public places", Dr. Wilson said.
Separately, five additional cases were confirmed in the Houston metro area Monday, including two boys younger than 2 in Harris County, prompting health officials to urge residents to "protect their children and themselves from this disease by getting vaccinated". Elizabeth Steiner Hayward used to be a champion for vaccinations, but she's one of the chief budget writers this session.More news: Trump says talks with China going well, hopeful on North Korea
In 2000, he said medical professionals announces there were no cases of measles in the US due to the vaccine.
There were no new confirmed cases of measles Tuesday - the first time in weeks.
Measles symptoms begin with a high fever, cough, runny nose and red eyes, followed by a rash that usually begins at the head and spreads to the rest of the body.
As the count of people with measles climbs toward 50, Clark County Public Health announced a short reprieve. In total, at least 79 cases have been reported across the country in 2019. Even children in the best of health who are diagnosed with measles should receive two doses of vitamin A supplements 24 hours apart, according to WHO.More news: Alphabet fourth-quarter revenue, profit beat estimates
People may have been exposed to the risky disease at more than three dozen locations, many in neighboring OR, such as Portland International Airport and the Moda Center, home to the Portland Trail Blazers.
Measles infections go in 21-day cycles. Children less than 5 years old and adults older than 20 are at highest risk of complications. The CDC notes that two doses of the MMR vaccine are 97 percent effective, while one dose is 93 percent effective.
The important thing is that you and your family are protected against a preventable disease and consult your doctor if you're unsure.More news: Emiliano Sala: AAIB attempting to recover body from plane wreckage
Washington and OR are among 17 states that allow some type of non-medical exemption for vaccines for "personal, moral OR other beliefs", according to the National Conference of State Legislatures. "There is a very remote chance of a vaccine causing a serious injury", the agency notes, including deafness, long-term seizures, coma and brain damage or death.