Sharon - Lyme's has been found in every state, but it is most prevalent in the Northeast region of the country from the DC/MD area, north to Maine. It probably wouldn't be a huge issue in FL, but you might want to ask your vet about it. My dogs get vaccinated every year, but it still isn't 100% effective either, as Sparky had it a couple of years ago. He tested false negative when my vet suspected he had it, but he actually did have it, and after a round of antibiotics for 30 days, he was back to "normal".