Overview

• Two Arapahoe County residents—a hospitalized unvaccinated toddler and a vaccinated adult recovering at home—tested positive for measles after traveling on Turkish Airlines flight 201 from Istanbul to Denver on May 13.
• Public health teams are contacting passengers and crew seated near the infectious traveler and families with lap children to advise on testing and quarantine measures.
• The breakthrough case in a vaccinated adult highlights that two doses of the MMR vaccine are about 97% effective but not foolproof.
• Exposure alerts cover six venues visited by the infected adult between May 22 and 26 across Aurora, Denver, Greenwood Village and Evergreen.
• Two free vaccination clinics are set up for those exposed and officials urge monitoring for symptoms through the 21-day incubation period ending around June 3.