23/11/2025
Japan Flu Outbreak — What Travellers Should Know 🇯🇵🚨
• Japan’s flu cases are rising rapidly.
• In the week ending Nov 16, over 145,526 flu patients were reported across more than 3,000 medical institutions.
• Average: 37.73 patients per clinic — well above the national warning level of 30.
• 24 prefectures have crossed the alert threshold; the surveillance map is almost entirely red.
• Tokyo is spreading fast with 44.75 patients per clinic.
• Some regions are extremely high:
Miyagi (80), Saitama (70), Fukushima (58), Gunma (52), Chiba (53), Hokkaido (44).
• Flu-related hospitalizations jumped to 1,466 cases this week (from 888).
• Most cases involve young children, seniors, or school clusters.
• 86% of detected viruses are A/H3N2, a highly transmissible strain.
• Experts warn the peak may come in December, but could extend into the New Year due to colder weather and heavy travel movements.
If you are travelling to Japan soon, please take the following precautions:
✔ Wear a mask in crowded or enclosed areas
✔ Wash or sanitise hands frequently
✔ Avoid sharing utensils or drinks
✔ Keep basic flu medication with you
✔ Seek medical attention early if symptoms develop
Stay safe and enjoy your trip — just be a little extra careful this season. ✈️🇯🇵