Just a note. The inoculations are given into the muscle on your upper arm, not into a vein. This is the same way tetanus shots are administered. I have found that if you flex your bicep after the shot, for maybe 30-45 minutes on and off, the soreness will be dramatically decreased. Take a five pond bar bell with you and do curls for a little while and it will help the next day. Learned this the hard way back in the day, at Bethesda Naval Hospital, now WRNMC.
I hope this helps and some of you report back!