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Herpes simplex virus encephalitis: laboratory evaluations and their diagnostic significance
The Journal of Infectious Diseases
|June 1, 1982
Summary
Diagnosing herpes simplex virus (HSV) encephalitis requires improved methods. Brain biopsies show variable accuracy, and serological tests have limitations, highlighting the need for noninvasive diagnostic procedures for HSV encephalitis.
Area of Science:
- Neurology
- Virology
- Pathology
Background:
- Herpes simplex virus (HSV) encephalitis is a severe neurological condition.
- Accurate and timely diagnosis is crucial for effective treatment and patient outcomes.
Purpose of the Study:
- To compare the diagnostic accuracy of laboratory procedures with brain biopsy findings in HSV encephalitis.
- To evaluate serological markers for primary and recurrent HSV encephalitis.
Main Methods:
- Brain biopsy analysis using histopathology, immunofluorescence, and electron microscopy.
- Serologic assessments including antibody titers in serum and cerebrospinal fluid (CSF).
Main Results:
- Brain biopsy demonstrated HSV in 56-70% of proven cases, with false positives in biopsy-negative individuals.
- Serologic tests showed HSV encephalitis as primary (30%) or recurrent (70%), with 28% failing to seroconvert within one month.
- Elevated CSF antibody titers (passive hemagglutinating and IgG immunofluorescent) were observed in 74% and 94% of proven cases, respectively.
Conclusions:
- Current laboratory diagnostic procedures for HSV encephalitis show variable sensitivity and specificity.
- Limitations in seroconversion and antibody detection highlight challenges in early diagnosis.
- There is a clear need for the development of more reliable, noninvasive diagnostic methods for HSV encephalitis.