When I was a member of the Schuylkill Center (for environmental education) in Roxborough, PA every one of the employees and interns there had deer tick bites. Some had Lyme disease. Somehow even though I was around deer tick infested areas frequently I was never bitten or never reacted to a bite. I would like to know why that happened. I was fishing with a friend and he suffered badly with black fly bites but I had no visible bites. It wasn’t the insect repellent. I just never reacted to the bites.
My daughter was bitten as a child in our back yard in Trappe, PA. My son who was outback just as much was never bitten. Jim Pitcherella