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HIV From Concrete/Object



I have extreme HIV anxiety and have been worried sick about the possibility of catching HIV from objects. Some say that the virus dies within seconds others say within 15 minutes, some say it depends on the amount of blood, some say that there's no way possible to catch the virus from objects, only direct wound to wound, transfusions, sexual intercourse, sharing needs, and breast milk. Please confirm? Is there anyway possible you can get HIV from person to object to person no matter how much time has lapsed?
The incident in question is a fall. I was at a shopping center where millions of people walk and frequent daily. I slipped and fell on concrete/grass and scraped both of my knees really badly to the point where they were both bleeding. I also scraped my hands and could see broken skin but no blood. Is there any way possible that if there were traces of blood on the concrete/grass where I fell (maybe came off someones shoe or a nosebleed etc) that I could contract HIV in this way? Also, a lady helped me up. I didn't see any blood on my hands but broken skin (small scrapes) If the woman had blood on her hands is there any way possible that I could get HIV through my small scrapes? Please advise!


Hi there,

Thank you for your inquiry. From what we gather from the question, you were asking about your risk of HIV transmission from scraped skin against concrete/grass.

From the information given, this scenario is determined to be No Risk (transmission of HIV is not possible in the given scenario). For this scenario, and others like it, please consider that HIV does not survive long outside of the human body (such as surfaces) and cannot reproduce outside of a host. Studies performed by the CDC have also shown that drying HIV causes a rapid reduction (90%-99%) in HIV concentration within several hours (1). Even so, environmental surfaces provide an extremely unfriendly climate for the HIV virus. Because of this, there is a highly unlikely chance of HIV transmission through scraping or injuring yourself on environmental surfaces.

Further, HIV is not transmitted through social contact such as hugging, kissing, shaking hands, sharing toilette or dishes (2). In this case the women who lent you her hand would have posed no additional threat of HIV acquisition.

Recommendation: There is no need for a HIV test with the scenario provided, please do refer to a physician for any other health related questions.

All the best, AIDS Vancouver Helpline/Online, Cody