My younger mare got the Lyme vaccine for the first time in March 2024 (she was 4 yrs old at the time), and had a bit of a colicky reaction to it, which stressed me out. This year we figured we’d just give her that separately from the rest of spring shots to see if it was just something about having it the first time vs something she’d always do. Happily this year she didn’t slow down a beat after that vaccination (or any other spring shots), so I am hopeful she’ll continue to handle it that way.
Even though we had a “real” winter in Vermont this past year, with cold-cold temps and close to 2 feet of snow on the ground from Thanksgiving through March, the ticks are the worst I’ve ever seen them right now. I’ve probably pulled 4-5 ticks off each mare DAILY these past couple of months. They are itchy, they are raw, they are miserable, but there’s just nothing that seems to work to prevent the ticks attacking them. Usually I have one crawling on me after every feeding, just contact transfer from the horses.
Knocking on all the wood I have not had a case of Lyme in any of my vaccinated horses. I did have a rough round of anaplasmosis with one mare a couple of years ago, and occasionally see some very bad open, angry sores at the site of tick bites, so there are still tick-related problems that come up. But, I think the Lyme prevention benefit of the vaccine outweighs the potential side effects for my personal situation.
I only wish the recent progress towards a human vaccine wasn’t being jeopardized right now 