Key Facts
• A teenage male from Kanagawa was confirmed to have measles on July 3, 2025.
• He visited the Osaka-Kansai Expo in June before his diagnosis.
• On June 21, he entered the venue via shuttle bus from Sakai Expo P&R parking.
• He visited multiple pavilions, including EU, Algeria, Cambodia, Chile, and Tunisia.
• Measles incubation period: 10–12 days, up to 21 days maximum.
• Osaka urges medical consultation for symptoms like fever or rash by July 12.
• Osaka is collaborating with the Expo Association, Kanagawa, and Osaka City to share information.
• Officials highlight low risk for vaccinated individuals but warn of severe cases in unvaccinated people.
• Measles-related deaths have been reported overseas in unvaccinated cases.
Summary
A teenage male from Kanagawa Prefecture was diagnosed with measles after visiting the Osaka-Kansai Expo in June 2025. He entered the venue on June 21 and visited several pavilions, including those of the EU, Algeria, Cambodia, Chile, and Tunisia. Measles symptoms appeared on July 3, prompting a diagnosis. Osaka authorities are urging individuals who may have been exposed to monitor for symptoms like fever or rash until July 12 and seek medical attention if needed. The measles incubation period ranges from 10 to 21 days. Officials emphasize the importance of vaccination, noting that unvaccinated individuals face higher risks, including severe outcomes reported internationally. Osaka is working with relevant organizations to enhance public awareness and prevent further spread.
