Evidence, as in empirical evidence? Seeing with my own eyes. Speaking with neighbors. Seeing neighbors that I know have their second home arriving, unloading lots of stuff. Speaking with folks at the Freeport Publix talking about people that are driving up from South Walton to shop because the 98 and WaterColor Publix are out of items. As for what do I suggest? Perhaps the county Emergency Management Services can at least discuss having checkpoints at major entrance roads to the county to test people. By the numbers above, 2 out of the 4 known cases are non-residents. Which by the way, sensationalist news reporters would report it as "50% of cases in Walton County are tourists!!!". @leeboy, are you a full time Walton County resident? And what would you suggest to do so as to prevent non-residents consuming resources, groceries and health care?