Tick season is heating up in Tennessee, with lots of lone star ticks active in the woods and my dogs has been bringing home American dog ticks each evening. These tick species can spread spotted fevers and red meat allergy, so please take precautions!
Regarding Lyme disease risk, that disease is spread by blacklegged ticks ("deer ticks"). Adult blacklegged ticks are winter-active and most of them are already back down in the leaf litter by this time of year - they will reappear in late October. Over the summer, it's the nymphal life-stage of this tick species that you need to be watching for, and this is a friendly reminder that nymphs (see photo) are much smaller than many people realize!
Be tick-safe out there!