A Surveillance and Azithromycin Treatment for Newcomers and Travelers Evaluation: The ASANTE Trial (ASANTE)
Infection with C. Trachomatis has decreased substantially in trachoma endemic areas following repeated annual mass drug administration (MDA) with azithromycin, although not as rapidly as anticipated. The investigators propose to conduct a clinical trial in 52 communities in Kongwa, Tanzania that on average have trachoma infection at 3.5%. The investigators plan that all communities would have annual rounds of MDA if infection is greater than 1% or follicular trachoma (TF) is 5% or more, but half would be randomized to a surveillance and treatment program to identify and treat new families and families who travel after mass treatment. Communities will have MDA stopped if infection is 1% or less, or TF is less than 5%. MDA will be reinstated if infection re-emerges to 6% or more. The proportion of communities that are able to stop mass treatment will be compared in the group of communities randomized to mass treatment plus the newcomer/traveler treatment program compared to the communities randomized to mass treatment alone after 24 months.
At the recommendation of the Data Safety and Monitoring Committee in March 2015, thirty eight (38) of the 52 communities identified as being at risk of trachoma re-emergence at 18 months will be surveyed at 30 months. At risk of trachoma re-infection communities have C. trachomatis infection rates less than or equal to 1% or TF < 5% at the time of the 18 month survey. Surveillance of communities for families that meet the newcomer or traveler status will extend 6 months beyond the 24 month survey to 30 months in the intervention communities only. A survey of sentinel children in the intervention and control communities at 30 months will be conducted to assess the level of trachoma and infection in all 38 communities at risk of trachoma re-emergence.
研究概览
地位
条件
研究类型
注册 (实际的)
阶段
- 不适用
联系人和位置
学习地点
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Maryland
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Baltimore、Maryland、美国、21205
- Johns Hopkins University
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参与标准
资格标准
适合学习的年龄
- 孩子
- 成人
- 年长者
接受健康志愿者
有资格学习的性别
描述
Inclusion Criteria:
Census and Mass Drug Administration (MDA): All persons residing in the 52 study communities will be eligible for both the census and the annual mass azithromycin administrations.
Intervention: In the 26 intervention communities, active surveillance for new families and returning travelers will be undertaken, and those meeting the criteria below will be eligible for family treatment with azithromycin if:
Families are "newcomers" and
- They have children under 10 years of age
- They have moved into a new house in the community or into an existing household
- They plan to reside for at least 1 month in the study community and
- They have moved from a community that has not had an MDA in the last year
Families are classified as having traveled and
- They have children under 10 years of age
- They participated in a previous census in the same community
- They left the community for at least 8 weeks (2 months) for an area that has not received MDA in the past year and at least one child has returned and
- They have returned to reside in the community for at least 2 months
Sentinel Children: In all 52 communities, samples of 135 children will be selected from the community census lists every six months for survey and examination.
These children:
- must be between 1 year and 9.9 years of age,
- must be a resident in the community and not a short-term (less than 2 months) visitor,
- must not have an ocular condition that would preclude grading trachoma or taking an ocular specimen,
- must be willing to have a swab taken as part of being a sentinel child (this is critical, as each swab result counts towards the criteria for stopping MDA), and
- must have an identifiable guardian capable of providing consent to participate.
Adult Women: In all 52 communities, samples of 100 women will be selected from the baseline community census list.
These women:
- must be aged 15 years and over
- must be a resident in the community and not a short term (less than 2 months) visitor
- must not have an ocular condition that precludes grading of scarring on upper conjunctiva
- must be able to provide informed consent.
Exclusion Criteria:
- none
学习计划
研究是如何设计的？
设计细节
- 主要用途：治疗
- 分配：随机化
- 介入模型：并行分配
- 屏蔽：单身的
武器和干预
参与者组/臂 |
干预/治疗 |
|---|---|
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实验性的：Intervention
Communities will receive usual care, including annual mass drug administration with azithromycin if trachoma infection level is greater than 1% or TF is 5% or more.
Communities will have MDA stopped if infection is 1% or less, or TF is less than 5%.
MDA will be reinstated if infection re-emerges to 6% or more.
In addition, surveillance and treatment with azithromycin of newcomer and traveler families within 2 weeks of arrival to or return to the community.
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The intervention is a surveillance for newcomers and travelers in communities, and provision of azithromycin to them at the time of arrival, in advance of scheduled mass drug administration
其他名称：
Scheduled mass drug administration (MDA) of azithromycin if trachoma infection level is greater than 1% or TF is 5% or more.
Communities will have MDA stopped if infection is 1% or less, or TF is less than 5%.
MDA will be reinstated if infection re-emerges to 6% or more.
其他名称：
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有源比较器：Usual Care
Communities will receive usual care, including annual mass drug administration with azithromycin if trachoma infection level is greater than 1% or TF is 5% or more.
Communities will have MDA stopped if infection is 1% or less, or TF is less than 5%.
MDA will be reinstated if infection re-emerges to 6% or more.
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Scheduled mass drug administration (MDA) of azithromycin if trachoma infection level is greater than 1% or TF is 5% or more.
Communities will have MDA stopped if infection is 1% or less, or TF is less than 5%.
MDA will be reinstated if infection re-emerges to 6% or more.
其他名称：
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研究衡量的是什么？
主要结果指标
结果测量 |
措施说明 |
大体时间 |
|---|---|---|
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The Proportion of Communities With C. Trachomatis Infection Prevalence of 1% or Below
大体时间：24 months
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The proportion of communities with C. trachomatis infection prevalence at 1% or below in children ages 1 to 9 years at the 24-month survey, comparing the intervention arm to the usual practice arm
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24 months
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次要结果测量
结果测量 |
措施说明 |
大体时间 |
|---|---|---|
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The Proportion of Communities With Clinical Trachoma Prevalence of 5% or Below
大体时间：24 months
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24 months
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The Mean of the Prevalence of Active Trachoma (TF) in Communities in Both Arms.
大体时间：Baseline only
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Model the risk of active trachoma in intervention and control communities. We used the mean % and 95 % confidence interval as they present for a variable to describe the center of the population the sample represents and the precision of the estimate of that center. If the variable is normally distributed in the population, the probability is 95% that the true mean falls in the 95% confidence interval. |
Baseline only
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合作者和调查者
出版物和有用的链接
研究记录日期
研究主要日期
学习开始
初级完成 (实际的)
研究完成 (实际的)
研究注册日期
首次提交
首先提交符合 QC 标准的
首次发布 (估计)
研究记录更新
最后更新发布 (实际的)
上次提交的符合 QC 标准的更新
最后验证
更多信息
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