Sores on Fawns, Please Help!

Hello, I am starting a new thread asking the same question I asked the other day about round open sores I have been finding on my fawns. I am starting this new thread to include some pictures of the wounds I took. Again, I have been finding round open sores on a high percentage of this years fawns. A lot of the animals have more than 1 wound usually about the size of a dime in several different places on their backs. They are sometimes in places where they have been administered sub-q shots but for the most part the wounds aren't in the same places. Most of the sores heal up on their own and don't seem to be casuing too much harm but I have never seen this before and there are LOTS of them so I would like to find out the cause and get rid of it. Thank you for everyone who has responded already and for those who are about to respond!