According to the Centers for Disease Control, before the vaccine was licensed in the early 1960s, the USA would see an average around 500,000 cases of measles every year.
Statewide in Washington, orders for measles vaccine jumped about 30 percent, climbing from 12,140 doses to 15,780 doses, figures showed.
So far in the USA this year, about 80 cases of measles have been reported, with two outbreaks ongoing in Washington and NY states.
The Washington State Health Department hasn't identified "patient zero" in the Clark County measles outbreak that has tallied 50 confirmed cases in Clark County and 55 total cases in Washington and OR since January 1.
In Clark County, 34 of the cases were among children age 10 or younger, while just two were among patients older than 18.
Denton County Public Health confirmed the case Wednesday and is working to identify and contact other people who may have been exposed. That includes attending church by video feed and working with employers.
The confirmed case of measles is in a child residing in Western Bell County. People who have never received a measles vaccine are susceptible to the disease, which can be deadly.
The vaccines include MMR, which protects against measles, mumps and rubella, and MMR-V, which also protects against the varicella-zoster virus, which causes chickenpox. This is because you might be infectious to others at the GP surgery.
The overwhelming majority of Washington's new cases have not been immunized, re-sparking debate over the anti-vaccination movement. The vaccine takes effect within 72 hours, health officials said.
Multnomah County officials have reported a steep uptick in vaccinations over this time past year.
The percentage of children receiving the first dose of the vaccine also increased, to 95%. Julie Graham, a public information officer with the Health Department, said those reports are inaccurate.
Washington and OR are among 17 states that allow nonmedical exemptions from vaccination requirements for school entry, according to the National Conference of State Legislatures.
To further limit the spread of the virus, health officials ask that people who think they might have measles call their doctor or health care provider before visiting a hospital or doctor's office. "It has also raised an awareness that measles could easily make a comeback, and the only way to prevent that is to get as many people vaccinated as possible".