Mannose-binding lectin deficiency

Mannose-binding lectin (MBL) deficiency is a condition where the immune system produces low levels of a protein called MBL, which helps the body identify and fight some bacteria, viruses, and fungi. Without enough MBL, the immune response may be less effective, making some individuals more prone to infections. While many people with MBL deficiency experience no issues, in others, it can lead to increased susceptibility to recurrent or more severe infections. It is a genetic condition, and its impact varies among individuals, often influenced by other factors in the immune system.