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45 recruiting studies matching your filters
Tfh Dysfunction in HIV and Aging
The purpose of this research is to evaluate blood samples from HIV infected and non-HIV infected people to understand how aging and HIV infection affect the im…
EVax-3: Human Upper and Lower Airway Mucosal Immune Response to FluMist Vaccination
The goal of this clinical trial is to measure the immune response in the blood, nose, and lungs after participants receive either the FDA-approved inactivated …
Natural History of Systemic and Nasal Mucosal Immunity to Influenza and SARS-CoV-2 in Adults After Vaccination
Background: Influenza (flu) vaccinations are required for all NIH staff members who have direct contact with patients. COVID-19 vaccines are recommended for p…
Influenza Human Challenge Model Using H3N2 (A/Texas/71/2017 (H3N2), Clade 3C3a)
This study is designed to help us better understand how the immune system responds to the flu and how flu is transmitted in the environment. The ultimate goal …
ORegon CHild Absenteeism Due to Respiratory Disease Study - Air Surveillance
The purpose of this observational study is to compare the effectiveness of air surveillance and to better understand the relationship between household transmi…
Influenza Human Challenge Model
This study examines how the immune system responds to the flu virus (H3N2) during and after infection and how the flu virus is transmitted in the environment. …
EMIT-2b: Evaluating Modes of Influenza Transmission Through the Conduct of Controlled Human Influenza Virus Infection Transmission Trials (CHIVITTs)
This is a research study to investigate how influenza transmits from person-to-person. Participation as a healthy "Recipient" in this study involves: * Home s…
Characterization of Humoral and Cellular Immune Responses Elicited by Influenza Vaccination in Healthy Adults
Cellular and humoral immune responses before and after seasonal influenza vaccination will be assessed. Each year, up to 100 participants will be enrolled. To …
A Phase 1, Observer-Blind, Randomized, Controlled Study to Evaluate the Safety and Immunogenicity of an Investigational mRNA Seasonal Flu/COVID-19 Combination Vaccine in Adults
This early-stage study will look at a new mRNA vaccine that combines defenses against both seasonal flu and COVID-19 in terms of its safety and how it builds p…
A Phase 3, Randomized, Observer-blind, Placebo-controlled Study to Evaluate the Immunogenicity, Safety, and Reactogenicity of mRNA-1018-H5 Pandemic Influenza Vaccine in Adults ≥18 Years of Age
The purpose of this study is to evaluate humoral immunogenicity after 2 doses of mRNA-1018-H5, and to evaluate the safety and reactogenicity of mRNA-1018-H5 in…
VRC 328: A Phase I Open-Label Clinical Trial to Evaluate the Dose, Safety, Tolerability, and Immunogenicity of Mosaic Hexavalent Influenza Vaccine VRC-FLUMOS0116-00-VP (FluMos-v2) With and Without ALFQ Adjuvant in Healthy Adults
Background: Vaccines help the body learn to fight infections. Some vaccines are combined with adjuvants, which are added substances that make vaccines work be…
Respiratory Virus Sampling and Repository
Background: Respiratory viruses, like the flu or COVID-19, cause significant illness and death worldwide. Researchers want to collect samples from people with…