What is common variable immunodeficiency (CVID)?

What is common variable immunodeficiency (CVID)?

CVID is a genetic disorder that affects the immune system. People with this condition have low levels of antibodies (proteins that fight infections) in their blood. When the body does not have enough of these antibodies, people may experience frequent infections.

In people with CVID, infections often develop in the respiratory system, ears and sinuses. CVID can increase your risk of developing digestive problems and cancer.

CVID is a primary immunodeficiency disease (PIDD). These diseases are genetic disorders in which a person’s immune system does not work properly.