Seronegative glandular fever.

Area of Science:

• Infectious Diseases
• Immunology
• Clinical Medicine

Background:

• Glandular fever, often caused by Epstein-Barr virus, typically presents with detectable antibodies (seropositive).
• Sporadic cases of glandular fever lacking these typical serological markers (seronegative) present a diagnostic challenge.
• The clinical and serological characteristics of seronegative glandular fever require further elucidation.

Purpose of the Study:

• To investigate the clinical and serological features of seven sporadic cases of seronegative glandular fever.
• To explore potential causes and diagnostic criteria for seronegative glandular fever.
• To determine if seronegative glandular fever represents a distinct entity or a variant presentation of the common disease.

Main Methods:

• Detailed clinical examination of seven patients diagnosed with seronegative glandular fever.
• Serological testing for sheep cell agglutinins, including assessment for incomplete or heat-labile variants.
• Evaluation of other potential infectious causes for the observed symptoms.

Main Results:

• None of the seven patients exhibited complete or heat-labile sheep cell agglutinins.
• Three patients showed very weak, but typical, glandular fever agglutinins.
• Three other patients had evidence of concurrent infections, which partially explained their illness.

Conclusions:

• Age may influence the serological response, suggesting some seronegative glandular fever cases are the same disease as seropositive cases.
• Other conditions with known etiologies can be clinically and hematologically indistinguishable from seronegative glandular fever.
• Further research is needed to refine diagnostic approaches for seronegative glandular fever.