I've a bit of a problem. I'm taking deca 300 out of 7 injections 2 have got infected. I went to the doc and got antibiotics for both but I can't seem to figure out what I'm doing unsterile. I use alcohol swabs new packeged needles, only once. It's not the gear because it's not every time and I've used 2 diff viles. The only thing I can't think is when I pull air into the syringe and then put it in the vile. I might try to use a new needle tip after filling syringe with the gear? I don't know what else to try. My boy is using same type needles and gear no problem. I swab the top of the vile also. My infections were labled as celulitus. Any advice?