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[Infectious mononucleosis in childhood]
G Monso Puigcercos1, J Pou Fernández, G Trujillo Isern
1Servicio de Pediatría, Hospital Sant Joan de Deu, Barcelona.
Insights
Epstein-Barr virus infectious mononucleosis in children presents differently by age. Early detection of IgM anticapsid antibodies is crucial in young children, with further Epstein-Barr virus serology recommended if initial tests are negative.
Area of Science:
- Pediatric Infectious Diseases
- Virology
- Immunology
Context:
- Infectious mononucleosis is a common viral illness in children.
- Epstein-Barr virus (EBV) is the primary causative agent.
- Clinical presentation and diagnostic markers can vary with age.
Purpose:
- To analyze the clinical features and diagnostic findings of infectious mononucleosis in pediatric patients.
- To compare presentations and antibody responses in different age groups (under 4 vs. 4-16 years).
- To provide recommendations for optimal diagnostic strategies in children.
Summary:
- A study of 42 pediatric infectious mononucleosis cases revealed age-related differences.
- Younger children (<4 years) showed higher rates of splenomegaly.
- Older children (>4 years) had more frequent heterophil antibody positivity.
- IgM anticapsid antibodies were present in 93% of cases.
- Amoxicillin treatment was linked to rash development.
- Rare complications included pneumonia and hemolytic anemia.
Impact:
- Highlights the importance of age-specific diagnostic approaches for EBV infections in children.
- Recommends IgM anticapsid antibody testing for all children under four.
- Suggests broader EBV-specific serology when heterophil and IgM tests are negative.
- Informs clinical management and diagnostic workup for pediatric infectious mononucleosis.
Abstract:
We present 42 cases of infectious mononucleosis caused by the Epstein-Barr virus in children. Patients were divided into two groups: those less than 4 years old and those 4 to 16 years of age. Splenomegaly was more frequent in young patients. Treatment with amoxicillin was associated with cutaneous rash. Heterophil antibodies were more frequent in patients older than four years of age. In 93% of the cases anticapside antibodies of IgM class were present. Complications were rarely encountered. Pneumonia and haemolytic anemia were present. We believe that anticapside antibodies of the IgM class should always be determined in patient younger than four years of age. If heterophil antibodies (Paul-Bunnell) and IgM are negative, we recommend that other specific serology related to the Epstein-Barr virus be determined in any age group.