Yes, it is posible to get HIV infection through performing or receiving oral sex, though it is a less common mode of transmission than other sexual behaviors (anal and vaginal sex).
If the person performing oral sex has HIV, blood from their mouth may enter the body of the person receiving oral sex through:
If the person receiving oral sex has HIV, their blood, semen (cum), pre-seminal fluid (pre-cum), or vaginal fluid may contain the virus. Cells lining the mouth of the person performing oral sex may allow HIV to enter their body.
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