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See the list of featured NIAID clinical trials below or view the complete list of NIAID studies recruiting participants on ClinicalTrials.gov.

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Laboratory of Infectious Diseases Clinical Research
Older Adult (65+)
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Coronaviruses and Flu (Influenza)

Natural History of Systemic and Nasal Mucosal Immunity to Influenza and SARS-CoV-2 in Adults After Vaccination

Are you an NIH staff member? If you have some time and have an interest in helping researchers make discoveries about COVID-19 and influenza, we need you!

We are interested in learning about long-term immunity in people who receive COVID-19 and/or flu vaccines.

Flu (Influenza)

Evaluating the Safety and Efficacy of Anti-Influenza Intravenous Hyperimmune Immunoglobulin (IVIG) in Adults Hospitalized With Influenza

The purpose of this study is to evaluate whether IVIG can reduce the severity and duration of flu in people who are hospitalized with the flu.

Influenza in People With Normal and Weakened Immune Systems

This study will evaluate how the immune system responds to influenza infection and compare how the infection differs in patients with a weakened immune system versus those with a healthy immune system.

Respiratory Virus Hospitalization Study (FLU 003 Plus)

The purpose of this observational study is to describe the characteristics and outcomes over a 60-day follow-up period of participants with influenza virus infection (including influenza A subtypes such as H3N2 and 2009 H1N1, or influenza B), or a targeted non-influenza respiratory virus, who are hospitalized with severe illness and/or complication in geographically diverse locations.