3类流感病毒正在传播，已有重症死亡病例

Core Insights - The flu activity in southern China is on the rise, with both influenza A and B detected, particularly H3N2 and H1N1 strains [1][2][4] - Vaccination is emphasized as the most effective method to prevent flu and its severe complications [1][7] Summary by Sections Flu Activity Monitoring - From October 6 to October 12, flu activity in northern provinces remained low, while southern provinces showed an increase, with a reported 4.1% of flu-like cases in the south, slightly lower than the previous week but higher than the same period in 2022 and 2024 [2] - In northern provinces, the percentage of flu-like cases was 2.8%, also lower than the previous week but higher than 2022 levels [2] - Three types of flu viruses were detected: H3N2, H1N1, and B Victoria, with H3N2 accounting for over 90% of the cases [2][3] Severe Cases and Deaths - Hong Kong has reported multiple severe flu cases, including one death of a previously healthy 13-year-old girl due to B influenza [4] - Another severe case involved a 2-year-old girl diagnosed with H3N2 flu, who had not received the current season's vaccine [5] Vaccination Efforts - Flu vaccination campaigns have started across various regions, with recommendations for annual vaccination due to the virus's ability to mutate [6][7] - In Beijing, free vaccination is organized for school students, elderly residents, and key industry workers, while self-paid vaccinations are available through various platforms [8]