Clark County Public Health identified one new confirmed case of measles Tuesday.
Dr. Theresa Tam says that some parents have come to fear the prevention of measles more than the disease itself, citing seeds of doubt planted by "misleading, or worse, entirely false information" online.
The Vancouver-area outbreak now stands at 71 confirmed cases of measles.
Medical Officer of Health Dr Ramon Pink says people aged one to 28 who have never been vaccinated are the target for these vaccines.
The Department of Health (DOH) reiterated its appeal to parents or guardians of preschool and grade school pupils to have the children vaccinated before school comes to a close.
She's urging doctors across the country to take the time to answer questions from anxious parents about vaccinating their kids to help stop the spread of measles.
The public health agency's most recent vaccination report says that the incidence of measles has nearly reached zero as a result of the measles vaccine.More news: Facebook's Chief Product Officer and Head of WhatsApp Just Left the Company
More news: Hallmark cuts ties with Lori Loughlin following arrest
More news: Jussie Smollett Pleads Not Guilty in Hoax Assault Case
In a bid to contain the outbreak, more than 18,000 doses of the vaccine were rushed to Christchurch on Wednesday, with a further 9000 due to arrive later this week.
Measles is highly contagious and is spread in the air through coughing or sneezing by someone who is unwell with the disease.
However, the report warned that outbreaks stemming from people bringing the disease into the country continue to take place, highlighting the need to "remain vigilant until measles is eradicated worldwide".
There is no cure for measles, but most people fully recover within two or three weeks.
In an era where, thanks to the success of vaccines, we are no longer familiar with these unsafe illnesses, some parents have come to fear the prevention more than the disease.
Sadly, as a paediatric infectious disease specialist, I have witnessed the devastating effects of vaccine preventable diseases on the lives of children and their families. Some have spoken of hard recoveries that have taken weeks or months, sometimes leaving permanent disabilities, and heartbreakingly, some have spoken about losing their children.