Hi @cedar234, Welcome to Mayo Clinic Connect. I have no medical background or training but from what I've read there is no vaccine to treat EBV. I've never heard of EBV leading to cancer. Here is some information about the test, what the results mean and how it's treated that may provide more information for you.

Epstein-Barr Virus (EBV) Test: https://www.healthline.com/health/epstein-barr-virus-test

May I ask where you heard or read EBV would lead to cancer?