Is EB virus associated with nasopharyngeal cancer in my husband contagious?

Having a husband with nasopharyngeal cancer means there is a possibility of being infected with Epstein-Barr virus (EBV).

EBV associated with nasopharyngeal cancer usually resides in the epithelial cells of the oral cavity and is contagious. It is primarily transmitted through saliva. Therefore, if proper disinfection of shared utensils is not observed, or during close contact such as kissing, the virus may be transmitted directly or indirectly to the partner.

Although EBV is contagious, not everyone who becomes infected will develop nasopharyngeal cancer. The likelihood of malignant transformation is related to individual immune function—people with weaker immunity have a higher risk of developing the disease, whereas those with stronger immune systems may naturally clear the virus.