Core Viewpoint - The current flu situation in China is concerning, with 17 provinces experiencing high levels of flu activity and a significant positive rate of flu virus detections among patients [1] Group 1: Flu Activity Levels - 17 provinces in China are currently at high flu activity levels, while the remaining provinces are at moderate levels [1] - The positive rate of flu virus detections among patients visiting emergency and outpatient services has reached 51%, which is below the highest levels seen in the past three years [1] Group 2: Age Group Impact - Reports of school outbreaks are increasing, with the positive rate of flu virus detections in the 5 to 14 age group significantly higher than in other age groups [1] Group 3: Virus Strains - The H3N2 subtype of the flu virus remains the dominant strain, accounting for over 95% of cases, with a small number of H1N1 and B type flu viruses circulating concurrently [1] Group 4: Future Projections - Based on recent monitoring, there is a high likelihood that flu cases in China will peak in mid-December [1]

Core Viewpoint - The overall influenza activity in China is currently at a moderate epidemic level, with the H3N2 subtype being the predominant strain [1] Summary by Relevant Sections Influenza Activity Monitoring - The monitoring data indicates that the influenza epidemic season typically begins in October to November, with peaks occurring in late December to early January [1] - The Chinese Influenza Monitoring System is actively conducting real-time monitoring and risk assessment across various regions [1] Current Influenza Status - Currently, the overall influenza activity in China is on the rise, with the H3N2 subtype accounting for over 95% of cases, alongside a small number of H1N1 and B type influenza viruses [1] - 23 provinces are experiencing moderate epidemic levels, while other provinces are at low epidemic levels, with southern provinces showing higher activity than northern ones [1] Future Projections - The early part of this influenza season is expected to be dominated by the H3N2 subtype, with H1N1 and B type influenza viruses circulating concurrently [1] - The intensity of the influenza activity is anticipated to further increase in the near future [1]