Evaluation of an IgG Deficiency Rapid Screening Test: A Performance Study With Primary Immunodeficiency (PID) Patients in Tunisia

We will be testing patients who have already been diagnossed iwth primary immunodeficiency (PID) disease. there are 400 types of PID. We will test their blood before they receive antibody transfusion to evaluate the accuracy of our new screening test. We are trying to develop easy to use, low-cost screening tests for doctors to use with patients to detect those with low IgG levels before they are given the oral polio vaccine. These patients must be prioritized for intramuscular injections of a polio vaccine to prevent potential spread of wild type polio.