CMV

Specialist

also cytomegalovirus igg/igm

What it isCytomegalovirus is a common herpesvirus that establishes lifelong latency after primary infection. Serology detects antibodies indicating past exposure (IgG) or acute infection (IgM).

DoesEstablishes CMV exposure status, which matters before transplantation, in pregnancy, and in immunocompromised states where reactivation can be devastating.

GoodA clear IgG-positive, IgM-negative pattern indicates immune memory from resolved past infection — the usual state in adults.

BadActive IgM positivity confirms acute or recently reactivated infection. CMV reactivation in immunocompromised hosts drives retinitis, colitis, pneumonitis, and graft loss. Congenital CMV is a leading cause of hearing loss and developmental disability.

Standard

IgG positive in most adults indicates past infection.

Optimal

IgG positive, IgM negative (narrow target)

Modifiers

Roughly half of adults are CMV-positive by midlife; rates higher with age and in lower-income settings.

How to optimize

Lifestyle: Hand hygiene around young children; avoid sharing utensils and drinks if seronegative and pregnant.
Diet: Whole-food anti-inflammatory pattern.
Supplements: Vitamin D3, zinc, vitamin C, selenium for general immune support.
Peptides: Thymosin Alpha-1, Thymalin for immune support in reactivation-prone states.
Drugs: Valganciclovir, ganciclovir, foscarnet, or letermovir reserved for active CMV disease in immunocompromised patients.

within Infections