日本流感疫情扩散

Core Viewpoint - Japan is experiencing a significant increase in flu cases, with over 57,000 reported cases in the last week, marking a doubling of new cases compared to the previous week [3][4]. Group 1: Flu Cases Data - As of the week ending November 2, Japan reported a total of 57,424 flu cases across thousands of designated medical institutions, averaging 14.9 cases per institution [3]. - The weekly increase in flu cases has been consistent for 11 consecutive weeks, indicating a rising trend in flu infections [3]. - According to Japan's standards, 25 out of 47 prefectures have reached the "caution" level for flu cases, with some regions like Miyagi, Kanagawa, and Saitama nearing the "alert" level with averages close to 30 cases per institution [3]. Group 2: Impact on Educational Institutions - The flu outbreak has led to the closure of 2,307 kindergartens, elementary schools, and middle schools across Japan, either fully or partially [3]. Group 3: Seasonal Context - The flu season in Japan was declared on October 3, which is approximately one month earlier than the previous year, marking the second earliest start since the current statistical methods were implemented in 1999 [4].