The Influence of Transmission Season on Outcome of Schistosoma Haematobium Infection Treatment Among School Children in Urban and Peri-Urban Areas of Maputo and Matola, Mozambique
试验速览
- 阶段
- 不适用
- 状态
- 已完成
- 发起方
- 入组人数
- 520
- 试验地点
- 1
- 主要终点
- cure rate
研究概览
简要总结
To assess the influence of seasonal variations in Schistosoma haematobium transmission on treatment outcome (morbidity and re-infection)
详细描述
General objective To provide knowledge about the influence of transmission season (high and low) on the outcome of treatment assessed by cure rate, re-infection rate, regression and reappearance of urinary tract morbidity rate after treatment in order to optimise praziquantel treatment strategies for morbidity control in urinary schistosomiasis.
Specific objectives To determine the prevalence and intensity of Schistosoma haematobium infection before chemotherapy and compare cure rates and levels of re-infection after chemotherapy administered during high and low transmission seasons.
To assess urinary tract morbidity due to Schistosoma haematobium by ultrasonography and compare the regression and reappearance of urinary tract pathology chemotherapy administered during high and low transmission seasons.
To correlate morbidity determined by ultrasound with infection and morbidity parameters such as intensity of infection, micro- and macrohematuria, circulating cathodic antigen (CCA) in urine, proteinuria and leucocyturia and determine sensitivity, specificity and positive predictive values in relation to urinary tract morbidity.
Study design The main research question concerning the influence of transmission season on treatment outcome will be addressed in a consecutive cohort study with two separate but comparable cohorts. The first cohort will be examined and treated with praziquantel during the season with high transmission, February/Mach (group A) and the second cohort will be examined and treated during the low transmission season, in July approximately 5 months later (group B). Each cohort will be examined before treatment and 2, 6 and 18 months after treatment.
研究设计
- 研究类型
- Interventional
- 分配方式
- Randomized
- 干预模型
- Single Group
- 主要目的
- Treatment
- 盲法
- None
入排标准
- 年龄范围
- 8 Years 至 12 Years（Child）
- 性别
- All
- 接受健康志愿者
- 否
入选标准
- •children aged 8-12 years
排除标准
- •All children presenting with macro-haematuria or severe pathology detected by ultrasonography (large masses, pseudo-polyps or hydronephrosis/hydroureter) at the 6 months follow-up examination will be treated with praziquantel and excluded in the data analysis.
结局指标
主要结局
cure rate
egg reduction rate
re-infection prevalence and intensity of infection *resolution of urinary tract pathology
re-appearance of pathology after re-infection.
次要结局
- reduction in worm burden (CAA);