instruction: hello doctor I made a tattoo almost six months back even at the time of receiving tattoo the artist used multiple needles in which I saw changing few and missed some I asked him about needle changing to which he said he did my concern is what are the chances of contracting hiv in worst case scenario that he did not change a few needles also till now I never had any fever or body pain or infection around the tattoo made
output: hello needle can transmit hiv only if the needle was freshly used in another person send the amount of blood collected in the needle is significant this is because the hiv virus dies very quickly outside the body in my opinion the odds of transferring hiv infection in the above scenario are quite less as the chances of both these conditions are present together is very less it is a good point that you have not had any fever or other symptoms testing is being mentioned because we are talking about the worst case scenario in short testing not needed ordinarily after tattooing however if you have much doubt about due precautions taken by the artist you can go for it