Malawi International Center of Excellence in Malaria Research School-based Cohort
2021年4月22日 更新者：Miriam Laufer、University of Maryland, Baltimore
Epidemiology of Malaria in Malawi: Human Hosts and Parasites in Three Districts Part 2: Cross-sectional Surveillance (School-based Cohorts)
A school-based, prospective, cohort study was conducted to evaluate the epidemiology of P. falciparum (Pf) infections in school-age children and determine the impact of the screen-and-treat approach on Pf infection and anemia prevalence among students in two different transmission settings.
Investigators aimed to evaluate how frequently malaria rapid diagnostic tests (mRDTs) fail to detect low-parasite-density infections as well as whether low-density infections contribute to the burden and health consequences of Pf infection in school-age children and whether they contain gametocytes, the parasite stage required for transmission from humans to mosquitos.
研究概览
详细说明
Students were enrolled in four schools in southern Malawi in the rainy (March-May) and dry season (Sept-Nov) of 2015.
15 students per grade-level (grades 1-8), were invited to participate.
Following enrollment, students were evaluated at baseline for screening-and-treatment, and followed-up 1, 2 and 6 weeks later.
At each follow-up visit, a blood sample was obtained for microscopy and molecular detection of parasites and students were interviewed about bed net use the night prior, current or recent illness, and use of antimalarial treatment.
At the final visit, a mRDT and hemoglobin test were repeated, and parents were interviewed and portable medical records ("health passports") were reviewed to identify intercurrent fever or malaria treatment.
研究类型
观察性的
注册 (实际的)
786
参与标准
研究人员寻找符合特定描述的人，称为资格标准。这些标准的一些例子是一个人的一般健康状况或先前的治疗。
资格标准
适合学习的年龄
5年 至 15年 (孩子)
接受健康志愿者
是的
有资格学习的性别
全部
取样方法
非概率样本
研究人群
15 students per grade (1 through 8) were randomly sampled in four primary schools
描述
Inclusion Criteria:
- Randomly selected student at a participating school
Exclusion Criteria:
- Parent or guardian not available for consent
- Age <5 or >= 16 years
- Known allergy or adverse reaction to lumefantrine-artemether
- Child will not attend this school during the time of the survey
- For the dry season survey (Sept-Oct 2015), participants in the rainy season survey (April-May 2015)
学习计划
本节提供研究计划的详细信息，包括研究的设计方式和研究的衡量标准。
研究是如何设计的？
设计细节
队列和干预
团体/队列 |
干预/治疗 |
|---|---|
|
All students
All participating students were screened for Pf infection using malaria rapid diagnostic tests (mRDTs) and treated if positive.
All were followed 1, 2, and 6 weeks after screening-and-treatment.
|
Students were screened by mRDTs and treated with artemether-lumefantrine if positive
其他名称：
|
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 |
|---|---|---|
|
P. falciparum infection
大体时间：6 weeks after screening
|
Any stage Pf infection detected by quantitative polymerase chain reaction (PCR)
|
6 weeks after screening
|
|
P. falciparum gametocyte presence
大体时间：6 weeks after screening
|
Pfs25 quantitative reverse transcriptase PCR
|
6 weeks after screening
|
|
P. falciparum gametocyte density
大体时间：6 weeks after screening
|
Pfs25 quantitative reverse transcriptase PCR
|
6 weeks after screening
|
次要结果测量
结果测量 |
措施说明 |
大体时间 |
|---|---|---|
|
Microscopic P. falciparum infection
大体时间：6 weeks after screening
|
Pf infection detected by microscopy
|
6 weeks after screening
|
|
Anemia
大体时间：6 weeks after screening
|
Hb measured by Hemocue and categorized using WHO age and gender specific values
|
6 weeks after screening
|
合作者和调查者
在这里您可以找到参与这项研究的人员和组织。
合作者
调查人员
- 首席研究员：Miriam Laufer, MD、University of Maryland, Baltimore
出版物和有用的链接
负责输入研究信息的人员自愿提供这些出版物。这些可能与研究有关。
一般刊物
- Cohee LM, Valim C, Coalson JE, Nyambalo A, Chilombe M, Ngwira A, Bauleni A, Seydel KB, Wilson ML, Taylor TE, Mathanga DP, Laufer MK. School-based screening and treatment may reduce P. falciparum transmission. Sci Rep. 2021 Mar 25;11(1):6905. doi: 10.1038/s41598-021-86450-5.
- Cohee LM, Peterson I, Buchwald AG, Coalson JE, Valim C, Chilombe M, Ngwira A, Bauleni A, Schaffer-DeRoo S, Seydel KB, Wilson ML, Taylor TE, Mathanga DP, Laufer MK. School-Based Malaria Screening and Treatment Reduces Plasmodium falciparum Infection and Anemia Prevalence in Two Transmission Settings in Malawi. J Infect Dis. 2022 Aug 12;226(1):138-146. doi: 10.1093/infdis/jiac097.
研究记录日期
这些日期跟踪向 ClinicalTrials.gov 提交研究记录和摘要结果的进度。研究记录和报告的结果由国家医学图书馆 (NLM) 审查，以确保它们在发布到公共网站之前符合特定的质量控制标准。
研究主要日期
学习开始 (实际的)
2015年3月24日
初级完成 (实际的)
2015年11月13日
研究完成 (实际的)
2015年11月13日
研究注册日期
首次提交
2021年4月14日
首先提交符合 QC 标准的
2021年4月22日
首次发布 (实际的)
2021年4月26日
研究记录更新
最后更新发布 (实际的)
2021年4月26日
上次提交的符合 QC 标准的更新
2021年4月22日
最后验证
2021年4月1日
更多信息
与本研究相关的术语
关键字
其他研究编号
- HP-00052129
- U19AI089683 (美国 NIH 拨款/合同)
计划个人参与者数据 (IPD)
计划共享个人参与者数据 (IPD)？
是的
IPD 计划说明
data will be available via a publicly available database, such as ClinEpiDB
IPD 共享时间框架
After results publication
IPD 共享访问标准
Public access with registration to allow tracking
IPD 共享支持信息类型
- 研究方案
药物和器械信息、研究文件
研究美国 FDA 监管的药品
不
研究美国 FDA 监管的设备产品
不
此信息直接从 clinicaltrials.gov 网站检索，没有任何更改。如果您有任何更改、删除或更新研究详细信息的请求，请联系 register@clinicaltrials.gov. clinicaltrials.gov 上实施更改，我们的网站上也会自动更新.