Core Insights - The current flu season in China is characterized by a significant rise in acute respiratory infections, with the H3N2 subtype being the dominant strain, accounting for over 95% of cases [1][4] - Monitoring indicates that 17 provinces are experiencing high levels of flu activity, with a nationwide peak expected in mid-December [1] - The positive rate for flu-like cases in emergency departments has reached nearly 45%, but this does not imply that half of the population is infected [2] Group 1: Flu Activity and Trends - The overall trend of acute respiratory infections is increasing, with flu viruses being the primary pathogens detected [1] - The flu activity is expected to remain elevated for the next 6-8 weeks, necessitating continued prevention efforts [1] - The H3N2 subtype remains the most prevalent, with minor occurrences of H1N1 and B type flu viruses [1] Group 2: Vaccination Insights - Vaccination is emphasized as a core preventive measure against flu, and it is still beneficial to get vaccinated even after the peak season has started [3] - Individuals who have previously contracted the flu are still advised to receive the vaccine, as immunity from one strain does not protect against others [3] - It is recommended to wait until recovery from acute symptoms before getting vaccinated, especially for those with underlying health conditions [3] Group 3: Demographics and Impact - The age group of 5-14 years shows a significantly higher number of flu cases compared to other age groups, with outbreaks primarily occurring in schools and childcare facilities [4] - Factors contributing to the spread include colder temperatures leading to increased indoor activity and poor air circulation [4] - Vulnerable populations, including young children, the elderly, pregnant women, and those with chronic illnesses, are at higher risk for severe complications [4]
未来6—8周流感防控不能放松 流感发展最新趋势
Yang Shi Xin Wen·2025-12-02 13:34