Dear kids in Washington State: you can make an appointment with your doctor, or walk into a clinic or ER, and get vaccinated. You don't need permission from your parents. You don't have to wait until you are 18. If the health care provider gets confused, the magic phrase is "Mature Minor Doctrine", and point out that not wanting to catch measles is sign of sufficient maturity.
Please reshare, and copypaste this any place this would be useful.