Thank you for your medical query at AskTheDoctor.com
I understand your concern.
Yes, it can be transmitted through oral sex, but the chances are remote.
It can only happen if the male partner ejaculates inside the female partner's mouth, and if she has any open mucosal lesions, the virus may enter through the lesion.
There are no such documented cases, this is more of a theoretical possibility.
Hope this was helpful,
These Q&A’s are for educational purposes and should not be relied upon as a substitute for medical advice you may receive from your physician. If you have a medical emergency, please call 911. These answers do not constitute or initiate a patient/doctor relationship.