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How Healthy Adults Respond to the Nasal Flu Vaccine (MOSAIC)

2026年7月21日 更新者：Kevin Harrod、University of Alabama at Birmingham

Characterizing Local Mucosal Responses to Live Attenuated Influenza Vaccine in Healthy Adults

This study is looking at how the immune system in the nose responds after receiving the FluMist nasal flu vaccine in healthy adults. FluMist is an FDA-approved influenza vaccine that is given as a nasal spray.

Healthy volunteers aged 18 to 65 who do not have chronic medical conditions, do not smoke, and have not recently received a flu vaccine will be enrolled. Participants will have three study visits over approximately one week. At the first visit, participants will be screened, give informed consent, and receive the FluMist vaccine. Nasal swabs and a gentle saline nasal wash will be collected before vaccination and again at two and four days after vaccination.

The samples collected will be used to study changes in immune cells, proteins, and viral activity in the nose using laboratory techniques such as gene expression and protein analysis. This information may help researchers better understand how flu vaccines work at the site where infection begins and may support the development of improved vaccines in the future.

There is no direct medical benefit expected for participants. Participation is voluntary, and all study procedures will be performed by trained clinical staff.

研究概览

地位

尚未招聘

条件

干预/治疗

详细说明

This is a prospective interventional study evaluating mucosal immune and epithelial responses in healthy adults following administration of the FDA-approved live attenuated influenza vaccine (FluMist) given as an intranasal spray. Healthy volunteers aged 18 to 65 years who do not smoke and who meet eligibility criteria will be enrolled.

Participants will complete three study visits over approximately one week. At the first visit, informed consent, screening, baseline nasal swabs and nasal wash will be performed, followed by administration of FluMist. Follow-up nasal samples and safety assessments will be collected at approximately 2 and 4 days after vaccination.

Nasal samples will be analyzed using single-cell RNA sequencing, proteomics, and RT-qPCR to assess local immune, epithelial, and viral responses. Samples will be coded, stored under secure conditions, and retained for up to five years after study completion.

The objective of the study is to characterize early mucosal immune responses to FluMist vaccination and improve understanding of influenza vaccine-induced immunity at the site of infection.

研究类型

介入性

注册 (估计的)

20

阶段

  • 第四阶段

联系人和位置

本节提供了进行研究的人员的详细联系信息，以及有关进行该研究的地点的信息。

学习联系方式

学习地点

  • 美国
    • Alabama
      • Birmingham、Alabama、美国、35294
        • University of Alabama at Birmingham
        • 接触：

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

  • 成人
  • 年长者

接受健康志愿者

是的

描述

Inclusion Criteria:

  • Healthy adults aged 18 to 65 years
  • Non-smokers (no smoking or vaping within the past 6 months)
  • No chronic lung disease or significant chronic medical conditions
  • No current or recent (within 1 month) upper or lower respiratory infection
  • Able and willing to provide informed consent
  • Have not received the current seasonal influenza vaccine
  • Able to comply with study procedures and follow-up visits

Exclusion Criteria:

  • Age under 18 or over 65 years
  • Pregnancy or breastfeeding
  • Prisoners
  • Non-English speaking individuals
  • Immunocompromised individuals (including HIV/AIDS, immunosuppressive therapy, chemotherapy, or primary immunodeficiency)
  • Chronic medical conditions including asthma, chronic lung, liver, kidney, neurologic, hematologic, metabolic, or significant cardiovascular disease (except isolated hypertension)
  • History of chronic sinusitis or significant nasal allergies requiring frequent or daily treatment
  • Acute moderate or severe illness at time of enrollment, with or without fever
  • Receipt of influenza vaccine during the current season or within the past 2 weeks
  • Receipt of another live vaccine within 4 weeks prior to enrollment or planned during study period
  • Use of influenza antiviral medications (e.g., oseltamivir, zanamivir) within 48 hours prior to vaccination or planned use within 14 days after vaccination
  • History of severe allergic reaction to influenza vaccine or any component of FluMist (including egg allergy if applicable)
  • History of Guillain-Barré syndrome following influenza vaccination
  • Any condition that, in the opinion of the investigator, would interfere with study participation or interpretation of results

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

  • 主要用途：基础科学
  • 分配：不适用
  • 介入模型：单组作业
  • 屏蔽：无（打开标签）

武器和干预

参与者组/臂
干预/治疗
实验性的：Healthy Adults Receiving Intranasal FluMist Vaccination
Participants in this single-arm study will receive the FDA-approved live attenuated influenza vaccine (FluMist) administered intranasally according to standard dosing guidelines. All participants will undergo nasal sampling procedures, including nasal swabs and nasal wash, at baseline prior to vaccination and at approximately 2 and 4 days following vaccination. Samples will be collected to evaluate temporal changes in mucosal immune and epithelial responses using molecular and proteomic analyses. No placebo or comparator intervention is used.
生物：FluMist (Live Attenuated Influenza Vaccine)
FluMist is an FDA-approved live attenuated influenza vaccine administered as a nasal spray. Participants will receive a single standard dose of FluMist intranasally, with half the dose administered into each nostril by trained study personnel according to manufacturer instructions. The vaccine is used in this study to evaluate local mucosal and immune responses in the nasal cavity.

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
Change in Nasal Mucosal Immune Response Following FluMist Vaccination
大体时间：Baseline through 4 days post-vaccination
This outcome measure evaluates changes in the nasal mucosal immune and epithelial response following administration of the intranasal live attenuated influenza vaccine (FluMist). Nasal swab and nasal wash samples will be collected at baseline (pre-vaccination) and at approximately 2 and 4 days post-vaccination. Samples will be analyzed using single-cell RNA sequencing, proteomics, and RT-qPCR to assess changes in immune cell populations, gene expression profiles, protein expression, and viral activity over time.
Baseline through 4 days post-vaccination

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。

赞助

University of Alabama at Birmingham

调查人员

  • 首席研究员：Kevin S Harrod, PhD、UAB All Study (Central)

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 (估计的)

2026年10月1日

初级完成 (估计的)

2030年6月30日

研究完成 (估计的)

2031年6月30日

研究注册日期

首次提交

2026年7月21日

首先提交符合 QC 标准的

2026年7月21日

首次发布 (实际的)

2026年7月24日

研究记录更新

最后更新发布 (实际的)

2026年7月24日

上次提交的符合 QC 标准的更新

2026年7月21日

最后验证

2026年6月1日

更多信息

与本研究相关的术语

关键字

其他相关的 MeSH 术语

其他研究编号

  • IRB-300016968
  • UAB (其他标识符：UAB)

计划个人参与者数据 (IPD)

计划共享个人参与者数据 (IPD)？

不

IPD 计划说明

Individual participant data (IPD) will not be shared with other researchers. The study involves collection of sensitive health information and high-dimensional molecular data (including transcriptomic and proteomic analyses) linked to coded identifiers. To protect participant privacy and confidentiality, data will be stored in secure, HIPAA-compliant systems with access limited to IRB-approved study personnel. Only de-identified, aggregated results will be reported in publications and presentations.

药物和器械信息、研究文件

研究美国 FDA 监管的药品

是的

研究美国 FDA 监管的设备产品

不

在美国制造并从美国出口的产品

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.

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