Both my son and my dog has had lyme disease within the past 2 years. Both of them were pretty sick form it. Luckily with my son, we caught it immediately. My do probably had it for a long time because now he suffers with arthritis. It’s a terrible illness. There have been quite a few cases of lyme in our area. Our yards have become the norm for deer to run at night due to the thinning woods from development.
And I don't think you become immune to it for having had it.