New Antibody Breakthrough: Virus Infects 95% of People

Nearly everyone carries it without knowing. A virus that infects 95% of people now has a new enemy: a lab-developed antibody that could shift how we prevent chronic disease and promote longevity.

The Science

The virus is cytomegalovirus (CMV), a herpesvirus that stays latent for life. According to the study, 95% of people are carriers, though most never develop symptoms. However, in immunocompromised individuals or during pregnancy, CMV can cause severe complications like birth defects or systemic infections. This ubiquitous virus is transmitted through bodily fluids such as saliva, urine, blood, and breast milk, and once acquired, it never leaves. Primary infection is often asymptomatic in healthy individuals, but the virus remains latent in myeloid cells, periodically reactivating, especially under stress or immunosuppression.

The new antibody, named LZV-1, binds to a key protein on the virus's surface, glycoprotein B, preventing reactivation from latency. In animal models, the treatment reduced viral load by 90% and blocked mother-to-fetus transmission in pregnant mice. These results, published in *Nature*, mark a major step against a ubiquitous pathogen. The mechanism of action is particularly innovative: instead of attacking free viral particles, LZV-1 targets infected cells that express glycoprotein B on their surface, marking them for elimination by the immune system. This may explain why the antibody is effective not only against active infection but also against reactivation from latency.