Group 1 - The core viewpoint emphasizes the importance of flu vaccination as a cost-effective and efficient measure to prevent influenza during the high incidence period of respiratory infectious diseases in autumn and winter [1] - The Chinese Center for Disease Control and Prevention (CDC) has established a nationwide influenza virus monitoring network to track virus mutation trends and adjust seasonal flu vaccine components accordingly [1] - Vaccination significantly reduces the risks of severe illness, hospitalization, and death, particularly for vulnerable groups such as the elderly and children, which is why annual vaccination is recommended [1] Group 2 - In addition to influenza, common respiratory infectious diseases in autumn and winter include bacterial infections, mycoplasma pneumonia, COVID-19, and respiratory syncytial virus infections [2] - Shanghai has expanded the management pilot for respiratory syncytial virus preventive monoclonal antibody injections, increasing the number of trial medical institutions from 7 to 43 to facilitate access for parents [2] - Experts recommend enhancing resistance to respiratory infectious diseases through healthy lifestyle choices, personal hygiene, and monitoring health conditions, especially during the autumn and winter seasons [2]