多省份提前进入流感季 专家呼吁：扩大疫苗接种范围

Core Insights - The flu activity in China has significantly increased, with most provinces entering the flu epidemic period earlier than expected this year [1][2] - The proportion of flu-like illness (ILI%) in northern provinces has surpassed the levels of the past three years, indicating a potential rise in flu cases [2][5] Flu Activity Overview - As of the 44th week of 2025, there were 347 reported outbreaks of flu-like cases, a notable increase from 144 the previous week [1] - The ILI% for southern provinces was reported at 4.6%, while northern provinces reported 5.1%, both higher than the previous week and previous years [2][3] Virus Strain Information - The dominant strain currently circulating is the H3N2 influenza virus, accounting for 98.8% of the detected influenza A cases [5][11] - The presence of H1N1 and Victoria lineage B viruses has also been noted, but H3N2 remains the primary concern [5] Vaccination Recommendations - Vaccination is emphasized as the most effective method to prevent flu, with recommendations for all individuals aged six months and older to receive the flu vaccine [6][7] - High-risk groups, including healthcare workers, the elderly, and individuals with chronic diseases, should be prioritized for vaccination [8][10] Vaccination Coverage and Challenges - Current vaccination rates in China are low, estimated at only 2%-3%, which hinders the establishment of effective herd immunity [14][15] - Suggestions have been made to expand free vaccination programs to include more groups, such as school staff and public transport workers, to improve overall vaccination rates [15][16]