No one told me I would need to give shots

One of the pigs seemed not be feeling well. His back legs were giving out from under him as he walked. He was eating fine and otherwise doing well. I called our 4-H leader and he recommended giving him some shots of penicillin. Off to the store I went and came home to give a very uncooperative swine his shot. You would never know how fast one of those animals could move until you jab one with a big fat needle. Sixty pounds of rocket pig went across the pen with the needle and syringe still sticking out of him. I had to run after him and depress the syringe before he had another chance to take off. The next day he needed his second shot and this time Suzanne and I went at him with a two person approach. After some wrangling and herding into a proper spot, I grabbed his back legs and pulled them straight back so his belly was on the ground, he of course hated this and squealed like crazy,  and Suzanne poked him with the needle. All in all a good method. The next day another pig had the symptoms and I made some more calls. The funny thing is we now think all they have is a bad case of SUNBURN. Holy Crap!!!