Mystery Diagnosis on Primary Immunodeficiency

Mystery Diagnosis about a specific type of Primary Immunodeficiency (PI) called Common Variable Immunodeficiency Disease (CVID).
Common Variable Immune Deficiency (CVID) is a frequently diagnosed primary immunodeficiency, especially in adults, characterized by low levels of serum immunoglobulins and antibodies, which causes an increased susceptibility to infection. While CVID is thought to be due to genetic defects, the exact cause of the disorder is unknown in the large majority of cases.
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