 More than 63,000 cases of Lyme disease tracked by the Centers for Disease Control in 2022, the most recent year on record. And the Mid-Atlantic is a hotbed for cases. July is the highest time that we find Lyme disease. It's when deer tick, which carry the Lyme disease bacteria, are most active. Pediatricians like Dr. Christina Brown with Kaiser Permanente says children spending the summer outdoors are at high risk of being bitten.