According to The Oregonian, most of the cases involved children younger than 10, the Clark County Public Health Department in Washington said in a statement. Travelers infected overseas can bring the virus into the country and spread it, causing periodic outbreaks.
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.
Around 88 per cent of children in the province have been sufficiently vaccinated against the disease. In 1998, Andrew Wakefield released a paper claiming to have linked the measles, mumps, and rubella (MMR) vaccine to the onset of autism.
Officials there say they expect more cases. The other four were infected from imported cases.
Across the United States, 2 percent of children did not receive standard immunizations for non-medically exempt reasons in the 2017-2018 school year.
Public health officials in Washington say people may have been exposed to the unsafe disease at more than three dozen locations, including Portland International Airport, a Portland Trail Blazers game, an Amazon locker location and stores such as Costco and IKEA.
Southwest District Health says health care providers should consider measles if they see patients with symptoms like fever and malaise followed by a rash that starts at the head and moves down the body.
"If the measles virus is introduced from overseas into populations that have not had the vaccination, it will spread very widely since measles is probably the most contagious virus we know", says Schaffner.
A laboratory confirmed that you just had measles in some unspecified time in the future in your life. It's not like a cold for three days.
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