Comparative Immunogenicity of Concomitant vs Sequential mRNA COVID-19 and Influenza Vaccinations
Completed
This is a prospective, randomized randomized immunologic study of response to influenza and SARS-CoV-2 vaccination across four of the US Influenza Vaccine Effectiveness (Flu VE) Network study sites.
Gender:
ALL
Ages:
Between 6 years and 64 years
Trial Updated:
06/11/2025
Locations: Washington University IDCRU, Saint Louis, Missouri
Conditions: Influenza, COVID-19
Study on an Investigational Yellow Fever Vaccine Compared With YF-VAX in Adults in the USA
Active Not Recruiting
The primary objective of the study is to demonstrate the non-inferiority of the antibody response in terms of seroconversion rate 28 days after vaccine administration of one dose of yellow fever vaccine (vYF) compared to the antibody response after one dose of the YF-VAX control vaccine in yellow fever naïve participants. The secondary objectives of the study are: * To describe the immune response to yellow fever in both vaccine groups before and after vYF or YF-VAX administration. * To descri... Read More
Gender:
ALL
Ages:
Between 18 years and 60 years
Trial Updated:
06/03/2025
Locations: Saint Louis University- Site Number : 8400003, Saint Louis, Missouri
Conditions: Yellow Fever, Healthy Volunteers
A Study to Evaluate VXA-CoV2-3.3 COVID-19 Vaccine Against Currently Approved/Authorized mRNA COVID-19 Injectable Booster Vaccine in Adults Previously Immunized Against COVID-19 Infection
Recruiting
The primary objective of the study is to determine the relative efficacy of the investigational oral severe acute respiratory syndrome coronavirus 2 (SARS-CoV2) vaccine tablet VXA-CoV2-3.3 compared to a currently recommended vaccine for the prevention of symptomatic Coronavirus Disease 2019 (COVID-19). In order to represent a more recently circulating SARS-CoV-2 variant, the main study endpoints will now evaluate the VXA-CoV2-3.3 (KP.2 strain) vaccine, and not the VXA-CoV2-3.1 (XBB.1.5 strain)... Read More
Gender:
ALL
Ages:
18 years and above
Trial Updated:
06/03/2025
Locations: Avacare (CCT) - Clay Platte Family Medicine Clinic, Kansas City, Missouri
Conditions: SARS-CoV2, COVID-19
A Study on the Safety and Immunogenicity of Hexavalent Influenza mRNA Vaccine in Adult Participants 50 Years of Age and Older
Active Not Recruiting
The purpose of this study is to evaluate the safety and immunogenicity of a single intramuscular injection of different formulations of a hexavalent influenza messenger ribonucleic acid (mRNA) vaccine composed of differing dose levels of trivalent (TIV) mRNA hemagglutinin (HA) in combination with TIV mRNA-neuraminidase (NA) compared to an active control ((Fluzone standard-dose quadrivalent influenza vaccine (QIV-SD) or Fluzone high-dose quadrivalent influenza vaccine (QIV-HD) in adults 50 years... Read More
Gender:
ALL
Ages:
50 years and above
Trial Updated:
05/29/2025
Locations: Alliance for Multispeciality Research - Kansas City- Site Number : 8400019, Kansas City, Missouri
Conditions: Influenza, Healthy Volunteers
A Study of an Ad26.RSV.preF-based Vaccine and High-dose Seasonal Influenza Vaccine, With and Without Coadministration, in Adults Aged 65 Years and Older
Completed
The purpose of this study is to evaluate the immunogenicity and safety of Ad26.RSV.preF-based vaccine and quadrivalent high-dose seasonal influenza vaccine when administered either concomitantly or separately.
Gender:
ALL
Ages:
65 years and above
Trial Updated:
05/22/2025
Locations: Sundance Clinical Research, Saint Louis, Missouri +1 locations
Conditions: Influenza, Human Prevention, Respiratory Syncytial Viruses Prevention
A Trial to Evaluate the Safety, Reactogenicity, and Immunogenicity of MVA-BN Yellow Fever Vaccine With and Without Montanide ISA-720 Adjuvant in 18-45 Year Old Healthy Volunteers
Completed
This study is a multi-center, double-blind, placebo-controlled, Phase I study to evaluate the safety, reactogenicity, tolerability, and immunogenicity of Modified Vaccinia Ankara-Bavarian Nordic-Yellow Fever (MVA-BN-YF) in Flavivirus-naive healthy male and non-pregnant female adult subjects. There are six dose groups in this study. Subjects who have never received a licensed or investigational smallpox vaccine will be randomized to Groups 1-5 and vaccine administration and follow-up will be cond... Read More
Gender:
ALL
Ages:
Between 18 years and 45 years
Trial Updated:
05/19/2025
Locations: Saint Louis University Center for Vaccine Development, Saint Louis, Missouri
Conditions: Yellow Fever, Yellow Fever Immunisation
A Study on the Safety, Effectiveness and Immune Response of Meningococcal Combined ABCWY Vaccine in Healthy Adolescents and Adults
Completed
The purpose of this study was to assess the safety, effectiveness, and immune response of the meningococcal combined ABCWY vaccine (GSK4023393A) intended to protect against invasive meningococcal disease (IMD) caused by all 5 meningococcal serogroups. The first time-in-human (FTIH), Phase I part of this study was conducted in healthy adults in a dose-escalating fashion with 2 formulations of the investigational MenABCWY-2Gen vaccine and served as a safety lead-in to the Phase II study. The Phase... Read More
Gender:
ALL
Ages:
Between 10 years and 50 years
Trial Updated:
05/14/2025
Locations: GSK Investigational Site, Springfield, Missouri
Conditions: Infections, Meningococcal
A Study of Safety and Immune Response to Different Doses of a Cytomegalovirus Vaccine in Healthy Adults
Completed
The purpose of this study is to assess the safety, reactogenicity and immune response of the candidate CMV recombinant protein subunit (CMVsu) vaccine consisting of a combination of glycoproteins B (gB) and pentamer antigens adjuvanted, regardless of baseline CMV sero-status. This FTiH study will be conducted in healthy adults 18 to 50 years of age, in which the 4 dose levels of the vaccine will be administered in a step-wise dose escalation manner, based upon safety adjudication.
Gender:
ALL
Ages:
Between 18 years and 50 years
Trial Updated:
05/12/2025
Locations: GSK Investigational Site, Springfield, Missouri
Conditions: Cytomegalovirus Infections
Retail COVID-19 Study
Active Not Recruiting
Despite the availability of vaccines, there remains a need to identify specific immune responses that correlate with protection against SARS-CoV-2 infection. Additionally, the operational capability of retail pharmacy infrastructure to collect longitudinal data and biological samples needs to be assessed. This study aims to fill these gaps by determining correlates of protection (CoP), assessing the infrastructure's capability, and examining demographic and geographic differences in participatio... Read More
Gender:
ALL
Ages:
3 years and above
Trial Updated:
05/06/2025
Locations: Walgreens - 17811 E US Highway 24, Independence, Missouri +2 locations
Conditions: COVID - 19
Study to Assess the Immune Response, the Safety and the Reactogenicity of Respiratory Syncytial Virus (RSV) Prefusion Protein 3 Older Adult (OA) (RSVPreF3 OA) Investigational Vaccine When co Administered With PCV20 in Older Adults
Completed
The purpose of this study is to assess the ability of RSVPreF3 OA investigational vaccine to generate an immune response when given in combination with PCV20 and its safety in older adults, aged ≥60 years of age.
Gender:
ALL
Ages:
60 years and above
Trial Updated:
05/06/2025
Locations: GSK Investigational Site, Saint Louis, Missouri
Conditions: Respiratory Syncytial Virus Infections
A Study to Evaluate a Modified RNA Vaccine Against Influenza in Adults 18 Years of Age or Older
Completed
This is a Phase 3, randomized, observer-blinded study to evaluate the efficacy, safety, tolerability, and immunogenicity of a single dose of a quadrivalent influenza modRNA vaccine compared to licensed inactivated influenza vaccine in healthy adults 18 years of age and older.
Gender:
ALL
Ages:
18 years and above
Trial Updated:
04/18/2025
Locations: Clinical Research Professionals, Chesterfield, Missouri +4 locations
Conditions: Influenza, Human
S1602: Different Strains of BCG With or Without Vaccine in High Grade Non- Muscle Invasive Bladder Cancer
Active Not Recruiting
This randomized phase III trial studies Tokyo-172 strain bacillus Calmette-Guerin (BCG) solution with or without a vaccination using Tokyo-172 strain BCG to see how well it works compared with TICE BCG solution in treating patients with bladder cancer that has not spread to muscle. BCG is a non-infectious bacteria that when instilled into the bladder may stimulate the immune system to fight bladder cancer. Giving different versions of BCG with vaccine therapy may prevent bladder cancer from retu... Read More
Gender:
ALL
Ages:
All
Trial Updated:
03/27/2025
Locations: Saint Francis Medical Center, Cape Girardeau, Missouri +2 locations
Conditions: Stage 0 Bladder Urothelial Carcinoma, Stage 0is Bladder Urothelial Carcinoma, Stage I Bladder Urothelial Carcinoma