EBV

The researchers emphasise that understanding the role of EBV in NPC's pathogenesis is crucial since the virus has 100% association with this cancer.

EBV -- a usually inactive, or latent, herpesvirus -- affects most of the human population; more than 90% of people carry the virus as a passive, typically symptomless infection.

Most people are carriers of EBV: 90% of the adult population are infected with the virus, usually experiencing no symptoms and no resulting illness.

A range of viruses relating to MS have been studied in the past but none have had such compelling evidence as EBV.

Approximately 95% of the world's population is infected with EBV, which remains in the body permanently, typically in B lymphocytes, which are antibody-producing immune system cells, and cells lining the throat and pharynx.