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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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Coronaviruses
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Coronaviruses and Immunodeficiency

Study of the Immune Response to and Safety Profile of COVID-19 Vaccines in Individuals With and Without Immune Deficiencies

Currently, people with immune disorders fall outside of guidance for COVID-19 vaccination, as they are typically excluded from vaccine trials.

Coronaviruses

COVID-19-Recovered Specimen Collection Research Study

The NIAID Vaccine Research Center is looking for volunteers who are recovered from COVID-19 infection to donate blood for a research study.

Delayed Heterologous SARS-CoV-2 Vaccine Dosing (Boost) After Receipt of EUA Vaccines

The primary objectives of this study are to evaluate the safety and reactogenicity of delayed heterologous or homologous vaccine doses after Emergency Use Authorization (EUA)-dosed vaccines and to evaluate the breadth of the humoral immune responses of heterologous and homologous delayed boost re

Genetics of COVID-19 Susceptibility and Manifestations

The goal of this study is to learn more about the genetic contributions to the severity of disease in COVID-19. We hope to use this information to develop therapies to reduce the severity of symptoms of COVID-19 in some people.

Study of Long-Term Medical Problems and Long-Term Immunity After COVID-19 Recovery

A study about long-term medical problems experienced by people who recover from COVID-19 and whether people who recover develop long-term immunity to SARS-CoV-2, the virus that causes COVID-19.

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.

Study of the Immune Response to the Seasonal Influenza Vaccine and How Previous Infection With SARS-CoV-2 May Change That Response

This study evaluates the response of the immune system, the part of the body that helps fight infections, to the seasonal influenza vaccine in healthy individuals and also investigates whether prior SARS-CoV-2 infection may change that response.

Coronaviruses and Allergic Diseases

Systemic Allergic Reactions to SARS-CoV-2 Vaccination

Now that COVID vaccines have been approved for children this research is being expanded to determine whether highly allergic children or children with mast cell disorders (a buildup of the white blood cells that release substances causing symptoms similar to an allergic reaction) are more likely