Children make up most of the 110,000 people estimated to have died from the virus in 2017, according to the U.N. body.
As of late last week, a total of 2,287 detainees had been quarantined in facilities across the U.S., according to the U.S. Immigration and Customs Enforcement agency.
At least 186 people between the ages of 13 and 66 have reportedly contracted the virus at Texas immigration detention centers.
"A philosophical or personal objection may not be used to exempt a child from the measles, mumps, and rubella vaccine," Washington State House Bill 1638 reads.
Mumps, which the MMR vaccine can prevent, can cause complications, including brain swelling and meningitis.
People were exposed to mumps at two Mexican dance events held at the same place three weeks apart.
Should avoiding vaccines be treated like a crime? Increasingly it is.