Key Facts
• Tokyo issued an influenza epidemic warning on November 13, 2025.
• Weekly cases per medical institution reached 29.03, a 1.2x increase from the prior week.
• The warning threshold was exceeded, prompting the announcement.
• This is the first November epidemic warning in 16 years.
• Authorities urge frequent handwashing and preventive measures.
Summary
Tokyo has declared an influenza epidemic warning after cases surged by approximately 1.2 times compared to the previous week, with an average of 29.03 cases per medical institution. This marks the first time in 16 years that such a warning has been issued in November. Authorities are emphasizing the importance of preventive measures, such as regular handwashing, to curb the spread of the virus.
