Diarrhea Clinical Trial
Official title:
A Randomized, Double-blind, Placebo-controlled Trial to Evaluate the Impact of Anthelmintic Treatment on the Incidence of Diarrheal Disease in School Children in Southern Vietnam
Cheap and effective drugs called 'anthelmintics' are routinely administered to children in
developing countries to eliminate infections by parasitic helminths. However, the effects of
anthelmintic treatment on other pathogens (e.g., bacteria, viruses, protozoa) remain
unknown. The aim of this study is to investigate the impact of anthelmintic treatment on the
incidence of viral- and bacterial-induced diarrhea in school children in southern Vietnam.
Diarrheal disease remains a substantial cause of morbidity and mortality in children in
Vietnam, and these children are typically co-infected with intestinal helminths. As
helminths and diarrheal pathogens infect the same intestinal niche, anthelmintic treatments
may alter host immune responses and the composition of the gut microbiota in ways that
affect infection and disease risks caused by diarrheal pathogens.
This study will recruit 350 helminth-infected and 350 helminth-uninfected children aged 6-15
years. Recruited children will be randomized to receive either anthelmintic or placebo
treatment once every three months and will be monitored for incidences of diarrheal disease
for 12 months. At the 12-month time point, all children will receive anthelmintic treatment.
Blood and stool samples will be collected throughout the study and used for evaluation of
anemia and host immune responses, and for classification of gut microbes and parasite
detection, respectively. The interventional study proposed here will provide an important
first test of whether anthelmintic treatments have any indirect effects on infections caused
by diarrheal pathogens.
This study is a randomized, double-blind, placebo-controlled trial to evaluate the effects of 400 mg albendazole treatment against placebo on the incidence of diarrheal disease caused by viral and bacterial pathogens in school children in southern Vietnam. Children will be enrolled from three primary schools in Cu Chi district in Ho Chi Minh City, Vietnam. Children will be screened for infections by the four most common soil-transmitted helminths, Ascaris lumbricoides, Trichuris trichiura, Necator americanus, and Ancylostoma duodenale. Infected and uninfected individuals will be recruited into the study and randomized to either receive albendazole treatment once every three months for 12 months, or to placebo once every three months for 9 months, after which albendazole treatment will be given at month 12, in accordance with the current deworming schedule in Cu Chi district. A questionnaire regarding the participant's demographics, his/her daily habits, and potential sources of infection will be administered at baseline. Weekly active and passive surveillance of diarrheal cases will be conducted throughout the study, and a health questionnaire will be administered during all cases of diarrhea and at the end of the study. ;
Allocation: Randomized, Endpoint Classification: Safety/Efficacy Study, Intervention Model: Parallel Assignment, Masking: Double Blind (Subject, Caregiver, Investigator, Outcomes Assessor), Primary Purpose: Treatment
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