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Efficacy and safety of anti-worm drugs in schoolchildren in Zanzibar, Tanzania

Efficacy and safety of albendazole and mebendazole as single-dose or in combination with ivermectin against soil-transmitted helminth infections, particularly Trichuris trichiura, in schoolchildren in Zanzibar, Tanzania: a randomised controlled trial

Status
Active, not recruiting
Phases
Unknown
Study type
Interventional
Source
ISRCTN
Registry ID
ISRCTN08336605
Enrollment
2000
Registered
2009-02-24
Start date
2009-03-01
Completion date
Unknown
Last updated
2015-01-13

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Soil-transmitted helminthiasis Infections and Infestations Other helminthiases

Interventions

Four treatment groups as follows: 1. Single-dose albendazole
children will receive one tablet of albendazole (400 mg) and a placebo resembling ivermectin (number of tablets according to weight) 2. Mebendazole
children will receive a single dose of mebendazole (500 mg) and a placebo resembling ivermectin (number of tablets according to weight) 3. Albendazole plus ivermectin
children will receive one tablet of albendazole (400 mg) plus ivermectin tablets according to their weight (200 µg/kg) 4. Mebendazole plus ivermectin
children will receive one tablet of mebendazole (500 mg) plus ivermectin tablets according to their weight (200 µg/kg) The treatment for the four arms will be administered on a single day
follow-up is 3 - 4 weeks post-treatment.

Sponsors

Swiss Tropical Institute (STI) (Switzerland)
Lead Sponsor

Eligibility

Sex/Gender
All

Inclusion criteria

Inclusion criteria: 1. Aged greater than or equal to 5 years, both sexes 2. Submission of one stool sample of sufficient size to perform a total of two thick Kato-Katz smears at the baseline parasitological survey 3. Submission of one stool sample of sufficient size to perform a total of two thick Kato-Katz smears at the day of treatment 4. Infection with Trichuris trichiura as determined with the Kato-Katz method at the baseline survey. Additionally, also children with A. lumbricoides and/or hookworm infections will be included in one of the four treatment arms. 5. For females, not pregnant, as verbally assessed by medical personnel on the day of treatment 6. Absence of major systemic illnesses, as assessed by female medical personnel on the day of treatment 7. No anthelminthic treatment in the past 4 weeks, as verbally confirmed by the participant at the baseline survey 8. Written informed consent by the parent/legal guardian

Exclusion criteria

Exclusion criteria: 1. No stool sample given at baseline survey or day of treatment 2. No infection with T. trichiura, A. lumbricoides and/or hookworm at baseline 3. Subjects with fever or other signs of acute illness 4. Subjects with severe neurological disorder 5. Subjects with severe liver disorder 6. Pregnant schoolgirls 7. Recent history of anthelminthic treatment 8. Consent not given

Design outcomes

Primary

MeasureTime frame
1. Cure rate of Trichuris trichiura infection (percentage of children with egg counts greater than 0 before treatment who become negative after treatment) 2. Egg reduction rate of Trichuris trichiura infection (reduction in egg count in a measured quantity of faeces following treatment in those not cured)

Secondary

MeasureTime frame
Cure rate and egg reduction rate of Ascaris lumbricoides and hookworm

Countries

Tanzania

Outcome results

None listed

Source: ISRCTN (via WHO ICTRP) · Data processed: Mar 30, 2026