Public awareness poster as part of the “Gestes Barrières 2025” campaign, which aims to make the “Gestes Barrières” habits a lasting part of people’s routines to combat winter viruses. This poster engages the general public in a positive way to encourage the adoption of these three essential measures to protect oneself and those around them: wearing a mask as soon as the first symptoms appear, washing hands, and ventilating rooms.