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Risk of hiv transmission from random blood on intact skin?
I was cycling this past weekend and while stopped at a light I noticed a pea sized spot of what appeared to be dried blood on my arm. I immediately grabbed my water bottle and rinsed it off and then continued my ride. Upon reaching home I checked the area an noticed no cut or wound anywhere near the area and when I cleaned the area with rubbing alcohol it did not sting which leads me to believe the blood was not my own. I live in an urban area (downtown Dallas) and pass many people on the streets and trails as I ride, some of whom are homeless. The winds were high that day so the blood could have been blown from someone nearby onto me as I passed by them. If the blood was from someone who is HIV positive, would I be at risk for transmission given the fact the random blood landed and dried on intact skin? In terms of duration of exposure I have no idea how long it was there, I had been riding for quite a while at that point. Thanks for any help you can provide!
HIV is inactivated in air otherwise everyone in America would have it from workplace accidents etc. Have you ever read of anyone catching it this way?
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