流感高流行，阳性率近48%，如何快检确诊？

Core Insights - The flu activity in China has entered a rapid increase phase, with positive rates for flu-like cases rising significantly in both southern and northern provinces, surpassing levels from previous years [1][9] - The dominant strain is the H3N2 subtype, accounting for over 95% of cases, with expectations of peak activity in mid-December [1][9] Group 1: Flu Activity and Trends - The flu virus positivity rate in southern provinces increased from 38.9% to 47.5%, while in northern provinces it rose from 43% to 48.1% [1] - Seventeen provinces have reached high epidemic levels, indicating a widespread flu outbreak [1][9] - The current flu activity has exceeded the same period in 2022, 2023, and 2024 [1] Group 2: Home Testing Services - Internet companies like JD Health, Meituan, and Alibaba Health have launched home testing services to provide convenient and rapid testing for patients during the flu peak [1][9] - The home testing service allows users to order tests via apps, with results available within 3-6 hours [3][4] - Meituan reported a continuous week-on-week increase of over 30% in home testing orders since November 2025 [9] Group 3: User Experience and Demand - Users can receive medical advice and order medications online if their test results are positive [4][6] - A user reported a seamless experience with home testing, receiving results within four hours and confirming a flu infection [6][9] - The demand for flu antiviral medications has surged, with purchases increasing by over 500% on Alibaba Health's platform [9] Group 4: Challenges Facing Home Testing - Home testing services are primarily available in densely populated first and second-tier cities, limiting access for residents in third and fourth-tier cities [13] - There is a lack of 24-hour testing and delivery services, which poses challenges for urgent cases, especially for children [15] - Concerns about the safety of delivery personnel and the accuracy of test results have been raised, highlighting the need for professional protective equipment and proper sampling procedures [12][15]