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HIV transmission from sharing a pen

Question: 

URGENT!! HIV transmission risk???

a clinical pathologist who was working on some lab blood tests, was wearing gloves and she signed a paper with a pen, and I -with my uncovered hand & small wound on my middle finger- signed with the same pen... I don't know if there was blood on her gloves or if any of the blood samples she was working had HIV... What to do and what is the risk????!!!

Answer: 

Thank you for your inquiry.

I understand that you are asking about the risk of acquiring HIV from using a pen that may have been exposed to the blood of an HIV person, through a small wound on your finger.

This situation is determined to be no risk (transmission of HIV is not possible in the given scenario)

The scenario mentioned above does not meet the three components of the transmission equation. In the situation described, there was no direct access to your bloodstream. Also, assuming that there was dried blood on the pen, the HIV virus is considered to be inactive once it leaves the body.

Recommendation: No need for HIV test with the scenario provided, refer to a physician for other health related questions

AIDS Vancouver Helpline/Online, Dyson