What Is Epstein–Barr Virus (EBV)?

Epstein-Barr virus (EBV) is a human herpesvirus and a DNA virus. Once infected with EBV, prompt medical consultation and adherence to the physician’s treatment recommendations are essential. The following provides a detailed analysis:

EBV exhibits latency and oncogenic potential; after infection, it can persist asymptomatically in the human body for extended periods and may be reactivated under certain conditions. EBV is primarily transmitted through close oral-to-oral contact—such as kissing, sharing eating utensils, or pre-chewing food before feeding it to infants. Additional transmission routes include respiratory droplets, iatrogenic transmission, mother-to-child vertical transmission, and indirect contact.

EBV is universally infectious across all age groups; however, most infected individuals remain asymptomatic and serve as latent carriers. Only a small proportion of infected individuals develop clinical illness, such as infectious mononucleosis. As the infection progresses, patients may present with fever, pharyngitis, lymphadenopathy, hepatosplenomegaly, and rash. Prompt antiviral therapy—such as acyclovir dispersible tablets, valacyclovir hydrochloride dispersible tablets, or famciclovir capsules—should be initiated per medical guidance.

In daily life, cultivating healthy habits—including regular physical activity (e.g., running, skipping rope)—can help enhance immune function and reduce infection risk.