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Published on: August 22, 2012
Single-dose therapy for giardiasis in school-age children
Krisana Pengsaa1, Kriengsak Limkittikul, Chanathep Pojjaroen-anant
1Department of Tropical Pediatrics, Faculty of Tropical Medicine, Mahidol University, Bangkok, Thailand. tmksp@mahidol.ac.th
Insights
A combination of albendazole and praziquantel showed a high cure rate for giardiasis in children, comparable to tinidazole. This combined therapy may also treat co-existing helminth infections.
Area of Science:
- * Infectious Diseases
- * Pediatric Parasitology
- * Clinical Pharmacology
Background:
- * Giardiasis is a common intestinal infection in school-age children.
- * Effective and safe treatment options are crucial for managing giardiasis and preventing its spread.
- * Investigating novel therapeutic combinations can improve treatment outcomes.
Purpose of the Study:
- * To evaluate the efficacy of a combined albendazole and praziquantel regimen for treating giardiasis in children.
- * To compare this combination therapy with single-agent albendazole and tinidazole treatments.
Main Methods:
- * A randomized controlled trial involving 84 school-age children with giardiasis.
- * Three treatment groups: albendazole-praziquantel combination, albendazole alone, and tinidazole alone.
- * Cure was defined as the absence of Giardia in two consecutive stool samples.
Main Results:
- * The albendazole-praziquantel combination achieved a parasitological cure rate of 74.2%.
- * Tinidazole showed the highest cure rate (92.6%), followed by the combination therapy.
- * Albendazole monotherapy had a cure rate of 50%. No significant difference was found between the combination and tinidazole groups.
Conclusions:
- * The combined albendazole-praziquantel regimen is a safe and potentially effective alternative for treating giardiasis in children.
- * This combination offers the advantage of treating concurrent helminth infections.
- * Further studies are needed to optimize the dosage of the combination therapy for Giardia intestinalis.
Abstract:
A randomized controlled trial was carried out to study the efficacy of combined albendazole and praziquantel in the treatment of giardiasis in school-age children. Eighty-four children were randomly allocated to 3 groups: group 1 (n = 31) albendazole 400 mg combined with praziquantel 20 mg/kg; group 2 (n = 26) albendazole 800 mg as a single dose; group 3 (n = 27) tinidazole 50 mg/kg as a single dose. The treatment was considered curative when Giardia was not found in two consecutive stool samples. The parasitological cure rate was 74.2% for combined single-dose albendazole-praziquantel, 50% and 92.6% in the albendazole and tinidazole groups respectively (p = 0.0023). There was no statistically significant difference between the cure rates of the combined regimen and tinidazole (p > 0.05). This combined regimen was considered safe, with only minor side-effects being observed. Of the single-dose regimens, tinidazole still achieves the highest parasitological cure rate for giardiasis. The albendazole-praziquantel combined regimen may be an alternative single-dose therapy for giardiasis in children, especially as this combination will eradicate common intestinal protozoa and co-existing helminths. Whether the dosage of this combination treatment should be adjusted for G. intestinalis remains to be established by further study.
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