Thank you for your inquiry. From what we gather from the question, you were asking about the possibility of HIV transmission through damaged and bleeding skin potentially in contact with blood with other individuals on a plastic rod. From the information given, this scenario is determined to be No Risk (HIV transmission is not possible in the given scenario).
HIV (contained in a body fluid such as blood) is extremely sensitive to the outer environment. Exposure to oxygen in an environment outside of the body causes HIV to undergo a rapid reduction in concentration (1). From the CDC, HIV that may be contained in a fluid (e.g. blood), has a rapid (within several hours) reduction in concentration of 90-99% (1). Therefore even if there was blood from other people on that same plastic rod, you are not at risk of HIV transmission due to the fact that any HIV positive particles would have been inactivated.
Recommendation: No need for HIV test with the scenario provided, refer to a healthcare professional for other health related questions.Take care,
AIDS Vancouver Helpline/Online, Shirley
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(1) HIV Environmental Exposure