I got a hiv combi test last day at polyclinic which works more predominantly on hiv cases.Result was neg,but i suspected something that happened there.laboratory worker,she turned me back on while she was opening syringe for taking blood.this was normal but she standed there more than enough.There was no reason to wait,and i couldnt see what was happening there.I didnt mind at that point afterwards i started to think on what if she contaminated syringe hollow with infected blood or what if she sticked needle to her hand for some malicious reason,why she waited in vain?.After test i should have been just relaxed but i was feeling more anxious.Should i consider this case?,have you ever heard any incident like this? are there any routine control for health workers as psychological and physical?