Key Facts
• Nagano issued its second food poisoning alert of 2025 on July 25.
• Alert covers the entire prefecture from July 25 to July 27.
• High temperatures and humidity exceeded alert thresholds on July 23–25.
• Averages for maximum and minimum temperatures, and humidity, surpassed safety limits.
• Residents advised to use clean utensils and wash hands thoroughly during food preparation.
• Five food poisoning cases have been reported in Nagano so far in 2025.
Summary
Nagano Prefecture issued its second food poisoning alert of 2025 due to prolonged high temperatures and humidity, creating conditions conducive to bacterial growth. The alert, effective from July 25 to July 27, applies to the entire region. Data from July 23 to 25 showed temperature and humidity levels exceeding safety thresholds. Authorities urge residents to maintain hygiene during food preparation, including using clean utensils and washing hands thoroughly. To date, five food poisoning cases have been reported in the prefecture this year.
