question: A couple of days ago, I went for a lab test and I requested an HIV, which came out negative. During the test however, the lab technician cleaned the area of my arm where he was going to introduce the needle for blood extraction, but after cleaning it, he touched the area one more time, wearing no gloves, and then inserted the needle.  Since I don’t know if his hands were decontaminated, I am concerned about the possibility of contamination and infection. No blood was visible on its fingers whatsoever, but could the virus still be present?