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Severe combined immunodeficiency signalized by eosinophilia and lymphopenia in rotavirus infected infants

U Hennewig1, A Schulz, O Adams

  • 1Department of Pediatric Oncology, Hematology and Clinical Immunology, Heinrich-Heine University Düsseldorf.

Klinische Padiatrie
|December 1, 2007
PubMed

Insights

Early diagnosis of severe combined immunodeficiency (SCID) is crucial. In infants with rotavirus infection, lymphopenia and eosinophilia on a full blood count suggest SCID.

Area of Science:

  • Immunology
  • Pediatric Infectious Diseases
  • Hematology

Background:

  • Severe combined immunodeficiency (SCID) is a group of rare genetic disorders characterized by profound defects in the immune system.
  • SCID often presents in infancy with severe, recurrent infections, leading to early mortality without treatment.
  • Timely diagnosis of SCID is challenging due to its heterogeneity and the potential for new subtypes, with delayed diagnosis correlating with worse outcomes.

Purpose of the Study:

  • To identify early diagnostic clues for severe combined immunodeficiency (SCID) in infants presenting with rotavirus enteritis.
  • To investigate specific hematological findings that may indicate SCID in this vulnerable population.

Main Methods:

  • A comparative study analyzing total white blood counts.
  • Included a cohort of 18 SCID patients with persistent rotavirus infection at diagnosis.
  • Compared findings to matched control patients with rotavirus infection but without SCID.

Main Results:

  • SCID patients exhibited a higher incidence of relative and absolute lymphopenia.
  • Eosinophilia was also significantly more common in SCID patients compared to controls (p<0.005).

Conclusions:

  • A full blood count is recommended for infants diagnosed with rotavirus infection.
  • The presence of eosinophilia and/or lymphopenia should raise a high suspicion for SCID, prompting further investigation.
Abstract

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