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Astrovirus encephalitis in boy with X-linked agammaglobulinemia

Phenix Lan Quan1, Thor A Wagner, Thomas Briese

  • 1Columbia University, New York, New York 10032, USA.

Emerging Infectious Diseases
|May 29, 2010
PubMed

Insights

Encephalitis is a serious global health issue, often with an unknown cause. Researchers identified astrovirus as a rare cause of encephalitis in an immunocompromised patient, demonstrating the power of unbiased sequencing for diagnosing rare diseases.

Area of Science:

  • Neuroscience
  • Infectious Diseases
  • Molecular Biology

Background:

  • Encephalitis is a significant cause of mortality globally, with over 100 identified pathogens.
  • A substantial percentage of encephalitis cases (up to 75%) remain undiagnosed, hindering effective treatment.
  • Current diagnostic methods are insufficient for identifying novel pathogens or unusual manifestations of known ones.

Observation:

  • Astroviruses are typically linked to gastroenteritis and have not been previously associated with central nervous system (CNS) disease.
  • A 15-year-old male with agammaglobulinemia presented with encephalitis.
  • Multiple laboratories failed to identify the causative agent in this patient.

Findings:

  • Unbiased pyrosequencing technology successfully identified astrovirus as the causative agent of encephalitis in the patient.
  • This marks the first documented association of astrovirus with encephalitis.
  • The patient's agammaglobulinemia may have contributed to the unusual presentation and susceptibility.

Implications:

  • This discovery expands the known spectrum of pathogens causing encephalitis.
  • Unbiased molecular sequencing is highlighted as a crucial tool for diagnosing unexplained neurological diseases.
  • The findings necessitate a re-evaluation of astrovirus as a potential neurotropic pathogen.

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