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Clinical Research Directory

Browse clinical research sites, groups, and studies.

5 clinical studies listed.

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COVID-19 Vaccine

Tundra lists 5 COVID-19 Vaccine clinical trials. Each listing includes eligibility criteria, study locations, and direct links to research sites in the Tundra directory.

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ACTIVE NOT RECRUITING

NCT05869968

SCIVAX: Biomarkers of Immune Dysfunction and Vaccine Responsiveness in Chronic SCI

The purpose of this observational research study is to better understand immune responses to vaccines against viruses (influenza or SARS-CoV2). The goal is to determine any differences in immune responses to vaccines in uninjured people and in people living with spinal cord injuries, who are typically at increased risk of infections.

Gender: All

Ages: 18 Years - 89 Years

Updated: 2026-04-03

1 state

Spinal Cord Injuries
Traumatic Spinal Cord Injury
Healthy Controls
+2
ACTIVE NOT RECRUITING

NCT06950177

Pancoronavirus Vaccine Study in Healthy Adults

Coronaviruses (CoVs) have caused the severe acute respiratory syndrome (SARS) outbreak, the Middle East Respiratory Syndrome (MERS) outbreak, and now the severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) pandemic. Although there are several approved or authorized vaccines for SARS-CoV-2, there are currently no vaccines approved to prevent diseases caused by multiple different coronaviruses. Two countermeasures with promise for controlling coronavirus outbreaks are recombinant neutralizing antibodies and vaccines directed against the virus. Between these two countermeasures, the ultimate solution to control the current COVID-19 pandemic and future CoV outbreaks is a pancoronavirus vaccine. In particular, a vaccine that can induce broader protection and can prevent severe disease caused by current SARS-CoV-2 variants of concern would help mitigate significant morbidity and mortality following SARS-CoV-2 infection. Additionally, an optimal pancoronavirus vaccine would prevent severe disease from other SARS-related viruses in the genus of coronaviruses-betacoronavirus-that are responsible for past outbreaks or could cause the next major outbreak in humans. Such a broadly active coronavirus vaccine would be an impactful first step towards preventing all life-threatening coronavirus human disease. The proposed vaccine immunogen (Cov-RBD-scNP-001) is composed of an engineered receptor binding domain (RBD) of SARS-CoV-2 WA-1 covalently linked in vitro to the surface of a Helicobacter pylori ferritin protein nanoparticle (RBD-scNP). The RBD has been engineered at two sites to improve its expression. The protein nanoparticle is composed of 24 individual ferritin subunits each of which can have a SARS-CoV-2 WA-1 RBD attached to it via a nine amino acid linker. The protein nanoparticle will be delivered with 3M-052-AF adjuvant - a TLR 7/8 agonist.

Gender: All

Ages: 18 Years - 55 Years

Updated: 2025-12-15

1 state

COVID-19 Respiratory Infection
SARS CoV 2 Infection
COVID-19 Vaccine
RECRUITING

NCT06821100

Thymalfasin (Thymosin Alpha 1; Ta1) as an Enhancer of Vaccine Response Among Older Adults Receiving Booster Doses of COVID-19 Vaccine

The goal of this research is to learn more about ZADAXIN® (trade name; thymalfasin generic; Ta1 for short) and determine if Ta1 has any benefit in increasing the immune response to the COVID-19 vaccine. Ta1 has been shown to stimulate the immune system to fight infections. This research study will test the safety and possible harms of Ta1 when it is given to people at different dose levels before COVID-19 vaccination.

Gender: All

Ages: 65 Years - 100 Years

Updated: 2025-07-31

1 state

Vaccine Response
COVID-19 Vaccine
Immune Response to Covid 19 Vaccination
ACTIVE NOT RECRUITING

NCT05822219

Vaccine Hesitancy in Black/African Americans With Rheumatic Diseases

To establish the efficacy of a community-based POL (Popular Opinion Leader) intervention with two different trainings designed to increase COVID-19 vaccine and booster uptake and reduce hesitancy among social networks of Black individuals with rheumatic conditions. The investigators will also determine the structure and composition of the personal and outreach social networks of POLs.

Gender: All

Ages: 18 Years - 85 Years

Updated: 2025-04-06

1 state

Rheumatic Diseases
COVID-19 Vaccine
COVID-19
+1
RECRUITING

NCT05553743

Researchers At UC San Diego Are Learning About the Benefits of Human Milk and How It Influences Infant and Child Health

The purpose of the UCSD Human Milk Biorepository is to establish and maintain a repository of breast milk samples that can be used to learn more about how breast milk influences infant and child health.

Gender: FEMALE

Ages: 18 Years - Any

Updated: 2025-01-31

1 state

Breastfeeding
COVID-19 Infection
COVID-19 Vaccine
+2