I had the original vaccine. I am always outdoors with fishing, hunting and a large garden. I got the first two shots and then just before I was to receive the third and final shot the vaccine was taken off the market due to quite a few negative reactions to it and lawsuits. The vaccine languished in obscurity never to be re-released by the developing company and never to be picked up by another company but there certainly was a need for a vaccine. The vaccine was never banned by a Federal agency, just never re-released by any pharmaceutical company due to the legal issues and limited upside potential revenue.
Though I pick a couple of dozen crawling ticks off me each year with about six or so already attached to me, I never had a tick on me so long that it blew up engorged with my blood and I also never contracted Lyme disease. Supposedly, the lyme bacteria enter the body at the time the tick releases from the bite and emits its saliva which is where the bacteria lives and enters the human skin and fluids. It is one reason when you remove an attached tick you don't want to squeeze it but use a needle nosed tweezers or one of those tick removes so you grab the mouth area of the tick where it enters the skin and pull straight up to remove it.
Anyway, this is where the Federal government needed to step in and solve the booster shot issues and re-release it with government funding since the pharmacy industry did not see much money in it. There is a lot more Lyme disease than realized. Much of it does not get diagnosed correctly and the patient gets the wrong treatments. Plus ticks carry a half dozen other ailments as bad or worse than Lyme. It is negligence on some level when a workable vaccine exists, it has not been banned but it is not available to the public. My two shot regimen had a protection level of about two thirds value. I know of other people who have had the two shots of the original vaccine and also never got Lyme disease so even the two shot works to a great extent. Kind of like the Covid vaccines are now. Not perfect but statistically better than nothing.
Best prevention is long pants, bloused into a pair of long socks, and a pair of work pants. Spray your lower areas with a good insect repellent. Also a long sleeve shirt, undershirt, and one of those neck guards that can be pulled up over your head. Now the tick has no where to go if it gets past the spray. If you are lacking the neck guard the ticks will crawl all the way to your head and love to attach at the back of your neck just inside the hair line. Any feeling of movement in that area will undoubtably be a tick.
After any time in the garden, fields or woods in warm weather take a shower after each trip and totally inspect every spot on your body. I have had ticks attached behind the knees, in the crotch and groin area, on the sides of my torso, under my upper arms and arm pits, on my face and neck, and in my hair mostly in the back of my head lower on the neck. But they are never on me more than a few hours and that is very important. These ticks can be as small as a pin head or large enough to pass as a small spider.
So inspect any black spot on your body that should not be there. If you can make it move or flop around with a pin or fine tweezers it is a tick.
Things to think about for the next warm season.