国家卫健委：呼吸道合胞病毒监测阳性率呈上升趋势，0-4岁阳性率较高

Core Viewpoint - The monitoring data indicates an upward trend in the positive rate of respiratory syncytial virus (RSV) in China, particularly higher in northern provinces compared to southern ones, with the highest rates observed in the 0 to 4 age group [1] Group 1: Respiratory Syncytial Virus (RSV) Monitoring - The overall positive rate of RSV is currently lower than that of influenza virus [1] - The positive rate of RSV is significantly higher in northern provinces than in southern provinces [1] - The age group of 0 to 4 years shows a notably higher positive rate for RSV [1] Group 2: Transmission and Prevention - RSV primarily spreads through respiratory droplets or close contact, and can also be transmitted via contaminated surfaces [1] - The peak transmission period for RSV in northern regions is mainly during winter and spring, while some southern regions experience peaks during winter-spring or humid rainy seasons [1] - There is currently no vaccine available for RSV, making enhanced protective measures crucial for preventing infection [1]