So my first "trainer" (not a super trainer) explained how they do vaccines. And when I first got my filly the trainer did them cause I had no vaccine knowledge and I trusted her at that point so I just believed it was done correctly. Now for the last while I've been educating myself on vaccines because I do give my own vaccines. When she did my filly who had no previous vaccines so these where her first ones. she gave Vetera EWT/WNV then a week later the Calvenza EIV/EHV,KV. Waited 4 weeks then gave the Vetera then the Calvenza a week after. Then advised me to give both in spring every year. I now understand the Vetera needs 2 shots initially with 3-4 between the shots. Then every year after that and when there's an anticipated exposure. So everything is good there. Is this more of a spring vaccine right? Or fall? So this is the Calvenza. Calvenza® Here the instructions given are "Using aseptic technique inoculate horses IM with a 2 mL dose. Administer a second 2 mL dose IM in 3-4 weeks using a different injection site. Administer a third 2 mL dose in 3-4 weeks IM or IN." What I understand is that the horse gets 3 Calvenza shots initially. 3-4 weeks apart. The first 2 are IM and the last is IM or IN. Is this it for the vaccine and there good till their dead or am I missing something? It doesn't say to re administer once annually or every six months or whatever. And where the Calvenza vaccines given gone to waste on my filly? She got it once at 11 months old, a second times 5 weeks later. And once this spring cause I had followed the "trainers" direction. And again spring or fall is best? Sorry for the sermon. Thoughts are appreciated. Thanks!