The Maricopa County Public Health Department said Friday the teen was infectious with measles from Aug. 9 to Aug. 11 at the Arizona Grand Resort, where the competition was held.
She also traveled through Terminal 2 at Sky Harbor Airport on the evening of Aug. 11. The terminal is used by United, Alaska, Spirit and a handful of small commuter airlines.
Health department spokeswoman Sonia Singh says the girl lives outside the United States but she can’t say where to maintain confidentiality.
Health officials say anyone potentially exposed to measles should watch for symptoms such as a fever or unexplained rash until Sept. 2.