Whole Genome-Based Surveillance of Nasopharyngeal Pneumococcal Carriage in Vietnamese Children
Whole Genome-Based Surveillance of Nasopharyngeal Pneumococcal Carriage and Serotype Distribution Among Vietnamese Children Hospitalized With Acute Respiratory Symptoms
研究概览
地位
地位
条件
条件
详细说明
Nasopharyngeal colonization with Streptococcus pneumoniae is a prerequisite for invasive pneumococcal disease. In Vietnam, PCV10 and PCV13 have been introduced in the private sector; however, updated surveillance data reflecting post-vaccine serotype dynamics are limited.
This study will enroll 530 children aged 2 months to 59 months hospitalized with acute respiratory symptoms. Participants will be categorized into:
- Group 1: Previously healthy children
- Group 2: Children with chronic underlying conditions Nasopharyngeal swabs will be collected at enrollment. Streptococcus pneumoniae isolates will undergo culture, identification using MALDI-TOF MS, and whole genome sequencing using the Illumina NextSeq platform. Bioinformatic analysis will include in silico serotyping, MLST typing, resistance gene detection, and co-colonization assessment.
The study will evaluate associations between pneumococcal carriage and demographic, clinical, vaccination, and environmental factors.
研究类型
研究类型
注册 (估计的)
注册
联系人和位置
学习地点
-
-
-
Hanoi、越南、00000
- Vietnam National Children's Hospital
-
-
参与标准
资格标准
资格标准
适合学习的年龄
- 孩子
接受健康志愿者
取样方法
研究人群
描述
Inclusion Criteria:
- Age 2 months to 59 months
- Hospitalized with acute respiratory symptoms (≤14 days duration)
- Parent or legal guardian provides written informed consent
Acute respiratory symptoms defined as one or more of:
- Cough
- Rhinorrhea
- Nasal obstruction
- Sore throat
- Tachypnea
- Wheeze
- Retraction
Exclusion Criteria:
- Confirmed pneumococcal infection within the past 30 days
学习计划
研究是如何设计的?
设计细节
研究衡量的是什么?
主要结果指标
主要结果指标
结果测量 |
措施说明 |
大体时间 |
|---|---|---|
|
Prevalence of Pneumococcal Carriage
大体时间:At enrollment
|
Proportion of participants with S. pneumoniae detected from nasopharyngeal swab Analysis: Prevalence with 95% confidence intervals
|
At enrollment
|
|
Pneumococcal Serotype Distribution
大体时间:At enrollment
|
Frequency distribution of pneumococcal serotypes identified via Whole Genome Sequencing
|
At enrollment
|
次要结果测量
次要结果测量
结果测量 |
措施说明 |
大体时间 |
|---|---|---|
|
Antimicrobial Resistance Genes
大体时间:at enrollment
|
Presence of resistance genes (e.g., ermB, mefA, pbp variants)
|
at enrollment
|
|
Vaccine Serotype Coverage
大体时间:At enrollment
|
Proportion of identified serotypes covered by PCV10, PCV13, PCV15, PCV20
|
At enrollment
|
合作者和调查者
研究记录日期
研究主要日期
学习开始 (实际的)
学习开始
初级完成 (估计的)
初级完成
研究完成 (估计的)
研究完成
研究注册日期
首次提交
首次提交
首先提交符合 QC 标准的
首先提交符合 QC 标准的
首次发布 (实际的)
首次发布
研究记录更新
最后更新发布 (实际的)
最后更新发布
上次提交的符合 QC 标准的更新
上次提交的符合 QC 标准的更新
最后验证
最后验证
更多信息
与本研究相关的术语
其他研究编号
其他研究编号
- VNCH-TRICH-2026-50
计划个人参与者数据 (IPD)
计划共享个人参与者数据 (IPD)?
IPD 计划说明
药物和器械信息、研究文件
研究美国 FDA 监管的药品
研究美国 FDA 监管的设备产品
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.