If you have measles, you can transmit it to someone before you show any symptoms. That's why doctors are urging people to get vaccinated: to protect not only themselves but others, too.

Children under 1 year old cannot get the vaccine. Beth Ebel, a UW Medicine pediatrician at Harborview Medical Center, says families have been asking about protecting those children, and she offers advice to concerned parents. One of the most important things is to ensure that everyone around the baby is vaccinated, simply by asking. That's something Megan Moore did for her 10-month-old, Dylan.