Measles cases in Japan during 2026 have reached 511, approaching the total of 744 cases recorded in 2019. The figures were released by Japan’s National Institute of Infectious Diseases on May 26.
This number reflects a significant increase compared to previous years. In 2020, Japan recorded fewer measles cases thanks to COVID-19 prevention measures, but the situation changed as restrictions were eased. Health experts warn that current infection levels are approaching pre-pandemic levels, prompting health authorities to step up surveillance and urge vaccinations.
The institute stressed that measles is a dangerous infectious disease that can cause severe complications such as pneumonia and encephalitis. It called on the public, especially children and unvaccinated individuals, to get fully vaccinated to prevent further outbreaks.
A major measles outbreak occurred in Japan in 2019 with 744 cases, the highest in recent years. Since then, thanks to expanded vaccination programs, case numbers declined, but 2026 shows signs of a resurgence.
