医药生物全国流感及发热门诊就诊数据跟踪（2025年10月）：10月份国内逐步进入呼吸道传染病高发季节

Investment Rating - The industry investment rating is maintained as "Outperform the Market" [2] Core Insights - The report highlights that October marks the beginning of the high incidence season for respiratory infectious diseases in China, with a notable increase in the number of patients visiting fever clinics [4][5] - Monitoring data indicates a significant rise in the positivity rate of influenza viruses, while the positivity rate for COVID-19 has been declining [7][14] - The report notes that the proportion of influenza-like illness (ILI) cases in emergency visits has increased, particularly in northern provinces, indicating a growing trend in respiratory infections [10][13] Summary by Sections Fever Clinic Data - From October 1 to October 31, the number of patients visiting fever clinics across 31 provinces fluctuated from 55,000 to 67,000, stabilizing between 60,000 and 63,000 towards the end of the month [5][4] Influenza and COVID-19 Monitoring - The positivity rate for COVID-19 among influenza-like cases decreased from 10.2% to 1.2% over the monitored weeks, while the positivity rate for influenza viruses increased significantly [7][14] National Influenza Surveillance - In the 44th week of 2025, southern provinces reported an increase in influenza activity, with a total of 347 outbreaks of influenza-like cases reported nationwide [10][13] - The positivity rates for the top three pathogens detected in emergency visits were influenza virus (17.5%), rhinovirus (12.4%), and enterovirus (6.7%) [14][15]