Thank you for your inquiry. From what we gather from the question, you were asking about the risk of HIV transmission through a needle-stick injury. For needle-stick injuries, the type of needle is important. If it was a hollow needle (hypodermic needle) the risk of HIV transmission is higher than with a non-hollow needle (such as a sewing needle) (1). In this answer I will assume worst case scenario (hypodermic needle).
From the information given, this scenario is determined to be Low Risk (evidence of transmission occurs through these activities when certain conditions are met). The risk of acquiring HIV from a hypodermic needle with blood containing the virus is between 0.2%-0.5% (1). The risk increases with the amount of blood introduced and the concentration of virus in the blood (2). The size of the needle, depth of penetration, and if blood was injected are also important considerations (1). Although the probability is low, the scenario does meet the three components of the transmission equation. Theoretically, blood containing HIV may have entered your bloodstream through the needle-stick injury.
Non-hollow needles (such as sewing needles) have not been implicated in the transmission of HIV, although there is a theoretical possibility (3).
Recommendation: Refer to a health care provider for HIV testing.
AIDS Vancouver Helpline/Online, Rashell
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1.) Risk of HIV Transmission associated with Needle-Stick Injuries.
2.) Case Control Study of HIV Transmission After Needle-Stick Injury.
3.) Occupational Risk of HIV Exposure in Health Care Workers.