What is the mortality and morbidity associated with severe combined immunodeficiency (SCID)?

Updated: Aug 11, 2020
  • Author: Francisco J Hernandez-Ilizaliturri, MD; Chief Editor: Emmanuel C Besa, MD  more...
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SCID is a devastating disease with a high risk of early death in infancy or childhood: a large number of patients die during their first year of life, and most do not survive beyond their second year.

The condition is notable for recurrent failure to thrive and common infections (eg otitis media, diarrhea, mucocutaneous candidiasis). Moreover, if infants are not diagnosed by age 6 months, opportunistic infections follow, especially Pneumocystis jirovecii pneumonia and invasive fungal infections, and mortality may ensue from infections with common viruses, such as the following [7, 9] :

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