日本流感连续两周达警报级别

Core Insights - Japan is experiencing a significant flu outbreak, with the average number of reported cases per medical institution reaching 43.34, marking the second consecutive week at epidemic alert levels [1] - The total reported flu cases in Japan exceeded 160,000 during the week of February 2 to 8, which is over 11 times the number of cases reported during the same period last year [1] - The flu season in Japan began earlier than usual, with the Ministry of Health announcing the start in October 2025, approximately one month ahead of previous years [1] Summary by Categories Flu Cases and Trends - The average number of flu cases reported per medical institution has increased for five consecutive weeks, reaching 43.34 cases [1] - The total number of flu cases reported in Japan during the week of February 2 to 8 was over 160,000, significantly higher than the previous year's figures [1] Impact on Education - Due to the flu outbreak, some schools in Japan have suspended classes [1] Virus Strains - The initial phase of the flu season saw a prevalence of the H1N1 strain, but there has been an increase in H3N2 cases since the end of 2025, which may contribute to the resurgence of the flu outbreak [1]