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Was this miniscule cut/nick a fresh cut? Or was it from several hours before?
Are you there?
The risk of unprotected oral sex and protected vaginal sex is very low.
The risk of such encounters with an HIV positive person is 0.005%, meaning that 99.995% will not become infected.
Whether there is any risk associated with the nick/cut depends upon whether it was a fresh cut.
Was the cut still bleeding or oozing?
If the cut had healed sufficiently that it was not bleeding, then it does not involve any risk.
The current recommendations for PEP is that it is not typically used for people that have had protected vaginal sex or unprotected oral sex.
If it is not bleeding, it has typically healed enough that it does not provide an entry for the virus.
No, because even if it was uncovered, this miniscule cut/nick would not pose any significant risk.
There does not appear to be a significant risk to this exposure.
Of course, any sexual encounter will carry some risk. The only way to completely avoid risk is to not have sex outside of a monogamous relationship.
But this encounter is not at a level of risk at which PEP is typically prescribed.
The risks noted above assume that she was HIV positive. The overall risk is less since she may not be HIV positive.
These cuts do not sound worrisome. The only risk is the small risk associated with protected vaginal sex and unprotected oral sex, which are noted above.
So, there would usually not be PEP prescribed for this encounter.
Some people are so anxious that they will request PEP for encounters in which it would typically not be used.
But PEP would typically not be used for this encounter.
I included the numeric risks above, although these risks assume that she is HIV positive.
To estimate your overall risk, the above risks would need to be lowered according to the prevalence of HIV in your community, and preferably of HIV amongst sex workers.
Your local Health Department would usually know the local prevalence data.
If testing after an individual encounter, the testing is recommended initially at 4-6 weeks and then repeated at 3 months.
The CDC does not recommend testing after every low risk encounter, but rather that regular testing should be done, usually annually, but the frequency can be adjusted according to the sexual pattern.
The testing at 4-6 weeks is typically only done for high risk encounters.
The current tests are very sensitive, and the average time from exposure to a positive test is 22 days, so most people are detected at 4 weeks.
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