My husband has (I think) 5 or 6 markers for Lyme. I forget the exact number. He's never had any symptoms, but got tested for it when was sick with something unidentified - turned out to be diabetes. A worker for the CDC contacted us and we had to do an interview of all the places we've lived and camped, along with months/years. The camping part was sketchy, at best, to remember. He gets ticks on him all the time. I am always in the same places, at the same times, and never get ticks. I think I've had two on me in my entire life. He gets that many on him every trip, sometimes more. It seems they like some people better than others.