COVID-19 poster green to white gradient

Quick answer：

A COVID-19 poster featuring a green to white gradient is likely designed to convey a message of hope and transition from the challenges posed by the pandemic to a period of recovery and normalization. The green often symbolizes health and vitality, while white represents cleanliness and purity, possibly reflecting the goal of overcoming the virus and returning to a healthier state. In graphic design, gradients can be used to create a sense of movement and progression, suggesting a journey from one state to another.