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Published on: December 15, 2023
[Clinical course of toxocarosis in children]
Małgorzata Niedworok1, Izabela Płaneta-Małecka
1I Klinika Pediatrii i Gastroenterologii, Instytutu Centrum Zdrowia Matki Polki, Lódź.
Insights
Toxocara canis infection in children often presents with non-specific symptoms like abdominal pain and fever. This parasitic infection impacts the immune system, showing altered eosinophil and lymphocyte levels in infected children.
Area of Science:
- Pediatrics
- Infectious Diseases
- Immunology
Background:
- Toxocara canis (T. canis) infection, or toxocarosis, is a parasitic disease.
- Clinical presentation of toxocarosis in children can be varied and non-specific.
Purpose of the Study:
- To monitor the clinical course of T. canis infection in children.
- To assess the impact of T. canis infection on the pediatric immune system.
Main Methods:
- Study included 52 children diagnosed with T. canis infection and 38 controls.
- Clinical examinations, laboratory tests (hematology, biochemistry), and immunological parameters were analyzed.
Main Results:
- Common symptoms observed were abdominal pain, subfebrile temperature, and lymphadenitis.
- Infected children showed increased eosinophils and immunoglobulin E, with decreased CD3+, CD4+ lymphocytes, and a lower CD4/CD8 ratio.
Conclusions:
- Toxocarosis diagnosis in children is challenging due to diverse and non-characteristic symptoms.
- Immune system alterations are significant in pediatric toxocarosis, necessitating broader differential diagnoses.
Abstract:
The aim of the study was to monitor the clinical course of T. canis infection in children with particular consideration of the estimation of infected children's immune system. The study comprised 52 children, aged 3 to 18 years, diagnosed and treated at the I Department of Paediatrics and Gastroenterology, Institute Polish Mother Health Centre, in whom infection with Toxocara canis larva was confirmed with serologic test. The control group included 38 children, aged 3 to 16 years in whom no infection with this parasite was detected in serologic test. In the investigated children subjective and physical examinations were performed, clinical symptoms, changes in organs, haematological, biochemical investigations and selected parameters of humoral and cellular immunity were analysed. In children with toxocarosis most frequently not localized abdominal pain, subfebrile body temperature and generalized lymphadenitis were observed. Significantly higher percentage of eosinophil cells and immunoglobulin E serum concentration with decreased percentage of lymphocytes CD3+, CD4+ and CD4/CD8 ratio were found in the investigated children. Toxocarosis diagnosis is difficult because its clinical symptoms are differentiated and not characteristic, what requires broadening of differential diagnosis concerning numerous entities.
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