Feb 28, 2017 | Immunology
Dr Cathy van Rooyen
Primary immunodeficiencies (PID) are a diverse group of inborn errors in immunity. PID can present at any age, with the more severe forms presenting in infancy. Due to the heterogeneity of presentation and age of onset, the diagnosis of PID is often delayed or missed. There are at least 300 known genetic defects resulting in PID.
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