Group 1 - The article highlights the increased risk of influenza transmission due to sudden temperature drops and crowded indoor environments, emphasizing the importance of daily protective measures in densely populated places like schools and nursing homes [1] Group 2 - Influenza is characterized as an acute respiratory infectious disease caused by the influenza virus, with symptoms that can include high fever, headaches, muscle and joint pain, and fatigue, distinguishing it from the common cold which typically has milder symptoms [2] - Severe complications from influenza can include pneumonia, heart damage, and shock, with vulnerable groups such as the elderly, chronic disease patients, children, and pregnant women being at higher risk for serious outcomes [2] Group 3 - Basic preventive measures against influenza include frequent handwashing, especially after contact with public items and before meals, using running water and soap for at least 20 seconds [3] - In high-risk environments or when in contact with individuals showing respiratory symptoms, proper mask-wearing is advised [3] Group 4 - Masks should not be used continuously and must be replaced immediately if they become wet or contaminated [4] - Coughing or sneezing should be covered with a tissue or the elbow to prevent droplet transmission, with used tissues disposed of promptly and hands washed afterward [4] Group 5 - It is recommended to maintain warmth while ensuring daily ventilation of indoor spaces 2-3 times for over 30 minutes each time to keep air circulation [5] Group 6 - A balanced diet rich in proteins, vitamins, and minerals is essential for building internal immunity, along with moderate exercise and ensuring 7-8 hours of quality sleep each night [6] - Foods such as water chestnuts, lilies, lotus root, snow pears, tremella, and yam are suggested, with herbal teas like honeysuckle and chrysanthemum being beneficial for throat discomfort [6]