Core Points - The article emphasizes that wearing masks alone is insufficient for flu prevention, highlighting the importance of two additional measures: proper ventilation and disinfection of frequently touched surfaces [2] Group 1 - Opening windows for ventilation can quickly replace indoor stale air, reducing virus proliferation [2] - Disinfecting high-contact surfaces such as doorknobs and mobile phones is crucial as they act as "invisible carriers" for virus transmission [2] - Combining these measures with mask-wearing can significantly enhance flu protection levels [2]