I did call and here in the US you can vaccinate for strangles yourself but you have to be really careful in doing so. Also here, you can vaccinate your horses yourself. I'm sure there are some vaccinations that need to be signed off by the vet especially when, as stated above, you are competing.
I've been doing research as well and I've seen a lot of articles from DVM's saying they don't advise the use of strangles vaccine due to the risk of side effects being greater than the risk of contracting this disease. What are your opinions? Would you vaccinate for it if your barn had a recent case or not? Have any of you experienced any of your horses contracting strangles? If so, what steps did you take? I appreciate all the replies! Have a great day!