California health officials are now asking parents with unvaccinated children to stay away from Disneyland after a measles outbreak has spread to six states and into Mexico.

Five Disneyland employees also got sick and the park is monitoring 100 people who've had contact with those employees.

Dr. Wendy Sue Swanson, a pediatrician at the Everett Clinic, has more on what you need to know about the outbreak.

Cases:

Vaccination status in California:

  • 34 of 59 cases vax status known
  • Of the 34, 28 unvaccinated
  • 6 infants too young
  • 1 had one dose
  • 5 had two doses

Washington Measles Update:

  • Two WA residents linked to Disneyland outbreak, both unvaccinated
  • Teen girl visited Disneyland in December
  • Sibling contracted disease on her return

WA Vaccination numbers:

  • 70.8% (+/- 7.8%) of children aged 19-35 months considered fully immunized
  • 93.5% (+/- 3.9%) children aged 19-35 months up to date on MMR
  • 5.0% of WA students exempt from required vaccines for 2013-2014 school year; 4.4% non-medical exemption

What you should know:

One person with measles can infect 12-18 others

Helpful Links:

CA Dept of Public Health

CDC vaccine data

MMR coverage by state

AAP statement on measles outbreak

Seattle Mama Doc article on the benefits of MMR shots

Ask Dr. Swanson: 70 measles cases linked to Disneyland