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17 clinical studies listed.

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SARS-CoV-2 Infection

Tundra lists 17 SARS-CoV-2 Infection clinical trials. Each listing includes eligibility criteria, study locations, and direct links to research sites in the Tundra directory.

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RECRUITING

NCT05141058

T Cell Therapy Opposing Novel COVID-19 Infection in Immunocompromised Patients

This is an open label, phase I dose-escalation study to evaluate the safety of coronavirus-specific T cell (CST) therapy for prevention of SARS-CoV-2 infection in immunocompromised patients following hematopoietic stem cell transplantation (HSCT). Participants will receive donor-derived CSTs for prevention of SARS-CoV-2 infection after HSCT (≥28 days and \<4 months after HSCT). In this dose escalation trial, three doses (1x107/m2, 2x107/m2, and 4x107/m2) will be tested for safety, with study arms for adult (≥18 years of age and \<80 years) HSCT recipients (Arm A) and two arms for pediatric (≥12 years of age and \<18 years; ≥2 years and \<12 years) HSCT recipients (Arm B and Arm C, respectively), and defined dose escalations in each study arm. The study agent will be assessed for safety (stopping rules defined) and antiviral activity.

Gender: All

Ages: 2 Years - 80 Years

Updated: 2026-03-12

2 states

SARS-CoV-2 Infection
NOT YET RECRUITING

NCT07430410

Clinical Validation of an At-Home Flu A/B and COVID-19 Rapid Test

The study's primary objective is to evaluate the performance of the CorDx Tyfast Flu A/B \& COVID-19 At-Home Test for detecting SARS-CoV-2, Influenza A, and B in nasal samples collected by lay users, compared to 510(k)-cleared RT-PCR tests. Secondary objectives are to assess usability and instruction comprehension and reproducibility with untrained operators at Clinical Laboratory Improvement Amendments (CLIA)-waived sites.

Gender: All

Ages: 2 Years - Any

Updated: 2026-02-25

SARS-CoV-2 Infection
Influenza A
Influenza B
ACTIVE NOT RECRUITING

NCT07079670

Safety and Immunogenicity of NVX-CoV2705

This study is a Phase 3 trial designed to check the safety and immune response to a new Omicron JN.1 COVID-19 vaccine. Study researchers will give a single dose of this vaccine, called NVX-CoV2705, to approximately 120 participants. This includes adults aged 65 and older, and individuals aged 12 to 64 who have existing health conditions that put them at high risk for severe COVID-19. All participants must have received a previous COVID-19 vaccine at least 90 days before joining this study. Study researchers will be closely monitoring participants for their immune response for 28 days and collecting safety data for 180 days after vaccination.

Gender: All

Ages: 12 Years - 90 Years

Updated: 2026-02-13

9 states

COVID-19
SARS-CoV-2 Infection
ACTIVE NOT RECRUITING

NCT05172011

Understanding the Long-term Impact of COVID on Children and Families

This is a combined retrospective and prospective, longitudinal, observational meta-cohort of individuals age 0-25 years who will enter the cohort with and without SARS-CoV-2 infection at varying stages before and after infection. Individuals with and without SARS-CoV-2 infection and with or without PASC symptoms will be followed to identify risk factors and occurrence of PASC. This study will be conducted in the United States and participants will be recruited through inpatient, outpatient, and community-based settings. Study data including age, demographics, social determinants of health, medical history, vaccination history, details of acute SARS-CoV-2 infection, overall health and physical function, and PASC symptoms will be reported by participants or collected from the electronic health record using a case report form at specified intervals. Biologic specimens will be collected at specified intervals, with some tests performed in local clinical laboratories and others performed by centralized research centers or banked in the Biospecimen Repository. Advanced clinical examinations and radiologic examinations will be performed at local study sites with cross-site standardization.

Gender: All

Ages: Any - 25 Years

Updated: 2025-12-31

33 states

SARS-CoV-2 Infection
ENROLLING BY INVITATION

NCT06478420

COVID-19 Omicron BA.5 Subvariant Dose Finding Infection Study

A phase 1, dose-finding open label clinical infection, safety and viral detection optimization in healthy volunteers immunologically experienced against SARS-CoV-2.

Gender: All

Ages: 18 Years - 40 Years

Updated: 2025-11-18

1 state

SARS-CoV-2 Infection
RECRUITING

NCT06810934

A Phase 1/2A, Randomized Study of a T Follicular Helper (TFH)-Targeting Genetic Vaccine Strategy Designed to Induce Broad, Durable Immune Responses

The goal of this clinical trial is to test two investigational COVID-19 booster vaccines, called CoTend-s3BXBB and CoTend-BXBB, in healthy volunteers ages 40-64. The CoTend-s3BXBB vaccine includes a component called "s3", which was designed to improve the body's response to the vaccine. CoTend-BXBB is the same vaccine without s3. The main questions the study aims to answer are: 1) Is the investigational vaccine safe? 2) Does "s3" lead to bigger, broader, and longer-lasting responses to the vaccine? 5 different doses of the vaccines will be studied. Participants will receive a single dose of either CoTend-s3BXBB, CoTend-BXBB, or placebo. Participants will be monitored for side effects. Saliva, nasal, and blood samples will be collected and immune responses to the vaccine will be measured.

Gender: All

Ages: 40 Years - 64 Years

Updated: 2025-10-31

1 state

COVID-19
SARS-CoV-2 Infection
ACTIVE NOT RECRUITING

NCT05683353

Mechanism and Immune Function Analysis of SARS-CoV-2 Infection in Hematologic Tumors

The goal of this observational study is to compare the immune function and infection mechanism of patients with hematologic tumors and those people without underlying diseases after infection with SARS-CoV-2. Clinical characteristics, treatment options and responses will be collected. Peripheral blood will be collected from patients with hematologic tumors infected with SARS-CoV-2 and those people without underlying diseases infected with SARS-CoV-2.

Gender: All

Ages: 18 Years - Any

Updated: 2025-05-31

1 state

SARS-CoV-2 Infection
Hematologic Malignancy
NOT YET RECRUITING

NCT06917261

Evaluation of the Diagnostic Performance of the TestNPass DM-DIV for SARS-CoV-2 Using a Nasopharyngeal Sample

The COVID-19 pandemic has created a major global health crisis that requires a rapid and effective response, particularly in the field of diagnostics. The first tests used, based on PCR (polymerase chain reaction) performed through a deep nasopharyngeal swab, have shown their limitations in controlling the epidemic. The current need is to develop new tests that are rapid, affordable and easy to use, and that can be used on a large scale in outpatient settings to reduce the burden on healthcare teams. In addition, a test that is easy to produce and can be stored at room temperature would help overcome the significant logistical challenge of regularly testing the general population to specifically isolate carriers of the virus. In this context, an innovative test called "TestNPass" has been developed. TestNPass is a rapid and affordable antigen test for screening and diagnosis that provides a secure digital passport and/or QR code upon request. Our aim is to evaluate the diagnostic performance of TestNPass using nasopharyngeal swabs for the detection of SARS-CoV-2 infection.

Gender: All

Ages: 18 Years - Any

Updated: 2025-04-08

SARS-CoV-2 Infection
ACTIVE NOT RECRUITING

NCT05110911

Does Repeat Influenza Vaccination Constrain Influenza Immune Responses and Protection

The objectives of this study are to understand the long-term consequences of repeated annual influenza vaccination among healthcare workers (HCWs) and to use statistical and mathematical modelling to elucidate the immunological processes that underlie vaccination responses and their implications for vaccination effectiveness. These objectives will be achieved by pursuing three specific aims: 1. To study the immunogenicity and effectiveness of influenza vaccination by prior vaccination experience 2. To characterize immunological profiles associated with vaccination and infection 3. To evaluate the impact of immunity on vaccination effectiveness. Under Aim 1, a cohort of hospital workers will be recruited and followed for up to 4 years to assess their pre- and post-vaccination and post-season antibody responses, and their risk of influenza infection. These outcomes will be compared by vaccination experience, classified as frequently vaccinated (received ≥3 vaccines in the past 5 years), infrequently vaccinated (\<3 vaccinations in past 5 years), vaccinated once, vaccine naïve and unvaccinated. In Aim 2, intensive cellular and serological assessments will be conducted to dissect the influenza HA-reactive B cell and antibody response, and build antibody landscapes that typify the different vaccination groups. In Aim 3, the data generated in Aims 1 and 2 will be used to develop a mathematical model that considers prior infection, vaccination history, antibody kinetics, and antigenic distance to understand the effects of repeated vaccination on vaccine effectiveness. Completion of the proposed research will provide evidence to inform decisions about continued support for influenza vaccination programs among HCWs and general policies for annual influenza vaccination, as well as much needed clarity about the effects of repeated vaccination. In March-April 2020 pursuant to the SARS-CoV-2 global pandemic an administrative supplement added a SARS-CoV-2 protocol addendum for follow-up of COVID-19 infections amongst our HCW participant cohort. The following objectives were added: 1. To estimate risk factors and correlates of protection for SARS-CoV-2 infection amongst HCW 2. To characterize viral kinetics and within-host viral dynamics of SARS-CoV-2 infecting HCW 3. To characterize immunological profiles following infection by SARS-CoV-2 4. To characterize immunological profiles following vaccination for SARS-CoV-2.

Gender: All

Ages: 18 Years - 60 Years

Updated: 2025-04-01

5 states

Influenza, Human
SARS-CoV-2 Infection
RECRUITING

NCT06099795

Evaluation of Concordance Between Exhaled Air Test (eBAM-CoV) and RT-PCR to Detect SARS-CoV-2

During the COVID-19 pandemic, testing primarily relied on the use of nasopharyngeal swabs to detect the SARS-CoV-2 virus, responsible for the disease. However, this technique has several limitations, including the variable quality of swabs, its invasive nature, and arbitrariness in the choice of the number of cycles. Furthermore, it does not allow for the detection of viral proteins. To overcome these limitations, researchers developed the eBAM-CoV test, patented for the detection of viral proteins in the exhaled air of COVID-19 patients. This portable device provides an immediate assessment of the "viral load" with both quantitative and qualitative results, showing promise for early virus detection. The researchers hypothesize that the eBAM-CoV test is likely to exhibit a satisfactory concordance with the reference RT-PCR test in the detection of COVID-19, especially among symptomatic patients or closed contacts.

Gender: All

Ages: 18 Years - Any

Updated: 2025-03-24

SARS-CoV-2 Infection
COVID-19
Coronavirus
NOT YET RECRUITING

NCT05633446

Next Generation T-cell Vaccine Against Coronavirus Disease (COVID-19)

The study aims to investigate the safety and immunogenicity of one dose vs two doses of a T-cell priming next-generation vaccine against Coronavirus disease.

Gender: All

Ages: 18 Years - 75 Years

Updated: 2025-02-24

2 states

Coronavirus
SARS-CoV-2 Infection
COVID-19
ACTIVE NOT RECRUITING

NCT05697068

Intervention to Prevent Household and Community Spread of COVID-19 Among Latinos

This study will examine the effectiveness of a 6-week behavioral intervention for patients who are recently diagnosed with COVID-19. Patients and their households will be randomized to one of two groups (Standard of Care vs. Enhanced Standard of Care). Patients in the Standard-of-Care group will receive established clinical care and follow-up. Patients in the Enhanced Standard-of-Care group will receive standard-of-care plus tailored, real-time text messaging and virtual counseling delivered by promotores/as. The investigators hypothesize that households in the Enhanced Standard-of-Care group will have fewer (any new) household COVID-19 infectivity rates compared to households in the standard-of-care group post-intervention.

Gender: All

Ages: 18 Years - Any

Updated: 2025-01-28

1 state

SARS-CoV-2 Infection
RECRUITING

NCT05384561

Olfactory Training As a Treatment for Olfactory Dysfunction Post COVID-19

Olfactory dysfunction is a defining symptom of COVID-19 infection. Studies have demonstrated improved olfaction in patients with post infectious olfactory dysfunction after an olfactory training (OT). The aim of this study is to assess the clinical outcomes of olfactory training (12 weeks) therapy in the treatment of persistent olfactory dysfunctions after COVID-19. Specially, we aim to compare the effectiveness of two different olfactory training (different odors). A group will train themselves with 4 scents (rose, orange, clove and eucalyptus) and another group with 4 different scents (cheese, coffee, strawberries and lemon). Olfaction sensory evaluation will be performed by using different olfaction tests (Sniffin' Sticks and UPSIT) and complete questionnaires to assess olfactory perception and particularly parosmia and phantosmia.

Gender: All

Ages: 18 Years - Any

Updated: 2024-12-17

1 state

Hyposmia
COVID-19
Parosmia
+2
RECRUITING

NCT04494776

SARS-COV-2 Infection in Kidney Transplant Recipients: a Brazilian Multicenter Study

COVID-19 is the pandemic disease caused by the SARS-CoV-2 coronavirus. It is a highly contagious viral disease, the condition of which main clinical symptoms are characterized by fever and respiratory symptoms. Evidence indicates to worse outcomes in patients with pre-existing diseases, such as diabetes, arterial hypertension, heart disease, pneumopathies, chronic kidney disease, and immunodeficiencies. Recipients of kidney transplants make prolonged use of immunosuppressive drugs to inhibit the acquired immune response, notably the activity of lymphocytes. Due to this potential to modulate the immune and inflammatory response, it is speculated that the clinical and laboratory condition of COVID-19 in these patients is atypical. Preliminary evidence suggests worse outcomes of COVID-19 in immunosuppressed patients, as carriers of cancer. However, information on kidney transplant recipients is insufficient. So far, only reports of the case are available in the literature with different clinical presentations and outcomes. The aim of this study is, therefore, to characterize the demographics, clinical and laboratory conditions, and the outcomes of COVID-19 in kidney transplant recipients in a national multicenter cohort.

Gender: All

Updated: 2024-11-08

1 state

SARS-CoV-2 Infection
Kidney Transplant Infection
ACTIVE NOT RECRUITING

NCT05046470

SARS-CoV-2 Transmission in Belgian Primary Schools of the Federation Wallonia - Brussels: An Epidemiological Pilot Study

The investigators hypothesize that children are less likely to become infected in the school environment, compared to the household or outside the school setting. Primary schools do not play a major role in SARS-CoV-2 spreading. They hypothesize that incidence level in schools is mainly a consequence of community transmission. The incidence level in household and that the secondary attack rate in schools remains at least 5 times lower that the transmission level in households.

Gender: All

Ages: 6 Years - Any

Updated: 2024-05-08

SARS-CoV-2 Infection
ACTIVE NOT RECRUITING

NCT05308576

A Study to Evaluate the Efficacy and Safety of SCTV01E (a COVID-19 Vaccine) in Population Aged ≥18 Years

The objective of this study is to evaluate the effectiveness of SCTV01E in participants aged ≥18 years.

Gender: All

Ages: 18 Years - Any

Updated: 2024-04-15

1 state

COVID-19
SARS-CoV-2 Infection
ACTIVE NOT RECRUITING

NCT04636697

Study of a Recombinant Coronavirus-Like Particle COVID-19 Vaccine in Adults

This Phase 2/3 study is a multi-portion design to confirm that the chosen formulation and dosing regimen of CoVLP has an acceptable immunogenicity and safety profile. The Phase 3 portion is an event-driven, randomized, observer blinded, placebo-controlled design that will evaluate the efficacy and safety of the CoVLP formulation compared to placebo. Subjects will be followed for safety and immunogenicity for a period of 12 months after the last vaccination.

Gender: All

Ages: 18 Years - Any

Updated: 2022-04-06

24 states

SARS-CoV-2 Infection