We have started giving flu shots. I have done many. I have some that bleed and others that dont. I was wondering if anyone has seen this before. Pt was given flu shot in deltoid, aspirate and saw no blood, but when I pulled out needle it bleed and I went to use safety needle cover and saw blood in syringe and on needle tip. WHAT! Did this get administered wrong. If so will pt be OK. Pt felt fine, I doubled checked. What if any complications would there be, and how did this happen? I have given so many, with some that bleed quite a bit, but I never saw in syring, unless I never noticed that before. Any help would be great, so I can relax a bit. Thanks