Investment Rating - The industry investment rating is "Positive" (maintained) [1] Core Views - The flu virus is a highly pathogenic pathogen, emphasizing the importance of flu prevention and treatment [14] - The flu activity is on the rise, with northern regions reporting the highest number of cases in nearly four years [16] - The strategic significance of flu prevention and treatment is highlighted, with opportunities expected in the vaccine, diagnostic, and antiviral drug sectors [19] Summary by Sections Flu Virus and Its Impact - Influenza is a common respiratory infectious disease with a high transmission rate and seasonal patterns, affecting approximately 1 billion people globally each year, with 300,000 to 500,000 severe cases and 290,000 to 650,000 deaths related to respiratory diseases caused by influenza [15] - The flu activity has shown an upward trend, with the ILI% reported at 5.1% in northern provinces, exceeding levels from previous years [16] Market Performance - In the first week of November 2025, the pharmaceutical and biological sector declined by 2.4%, underperforming the CSI 300 index by 3.22 percentage points, ranking 29th among 31 sub-industries [6][26] - The pharmaceutical circulation sector saw the highest increase, up by 1.59%, while the medical research outsourcing sector experienced the largest decline, down by 4.93% [26] Investment Opportunities - The flu prevention and treatment strategy is gaining importance, with structural opportunities expected in the vaccine, diagnostic, and antiviral drug industries due to low vaccination rates and ongoing virus mutations [19] - Specific companies benefiting from the flu season include Innotest and Ansun Biologics in the in vitro diagnostics sector, Huazhong Biological in the biological products sector, and Zhongsheng Pharmaceutical in the traditional Chinese medicine sector [5] Recommended Stocks - Monthly stock recommendations include: Sanofi, Innovent Biologics, Baillie Gifford, Frontier Biologics, Haofan Biologics, Aopumai, Shanghai Yizhong, WuXi Biologics, Zai Lab, and Fangsheng Pharmaceutical [7] - Weekly stock recommendations include: Yaokang Biologics, Bidu Pharmaceuticals, Haoyuan Pharmaceuticals, China Resources Sanjiu, Huadong Medicine, Sunshine Nuohuo, Yuekang Pharmaceuticals, Zhongsheng Pharmaceuticals, and Jichuan Pharmaceuticals [7]