View clinical trials related to Vaccine Preventable Diseases.
Filter by:The Collaborative Open Research Initiative Study (CORIS) is a groundbreaking international research endeavor aimed at exploring vital topics within the field of health professions education. At its core, CORIS embodies the spirit of inclusivity by opening its doors to contributors from all corners of the globe, putting the power of research into the hands of the global community and fostering an environment of open collaboration and meaningful contribution. We invite anyone and everyone to join as collaborators and suggest questions for inclusion in the survey, ensuring that the research process is enriched by diverse perspectives. As a collaborator, you will not only have the opportunity to actively engage in survey design, question formulation, and the entire research process from start to finish, but also gain the prospect of achieving valuable publications, which may boost your professional career.
The goal of this observational study is to learn about vaccine immunity in patients with B-cell malignancies treated by chimeric antigen receptor T-cell therapies (CAR-T). The main questions it aims to answer are: - Do CAR-T cell therapy recipients lose vaccine protection against common vaccine-preventable pathogens - Are current re-vaccination recommendations sufficient in restoring vaccine-protection - Is this restored vaccine-protection after CAR-T cell therapy lost faster than usual - Do clinical or immunological factors predict vaccine response after CAR-T cell therapy
Hepatitis A virus (HAV) vaccine is an effective strategy to prevent natural HAV infection. In Thailand, there are 2 types of HAV vaccine available, including inactivated HAV vaccine and live-attenuated HAV vaccine. This study aims to compare the immunogenicity and safety of inactivated and lived-attenuated HAV vaccine among Thai healthy children and adolescents age 18 months to 18 years.
Rationale Causing a wide range of infectious diseases, including pneumonia, otitis media and meningitis, S. pneumoniae represents an important global health problem. Pneumococcal vaccines are clinically effective in preventing invasive pneumococcal disease, but the underlying immune response is likely to differ due to the inclusion of T cell epitopes in the conjugate, but not purified polysaccharide vaccine. However, these differences remain scantly studied. Lymph node fine needle aspiration (FNA) has been recently described to study vaccine-induced germinal centre responses in depth and represents a promising tool to study the underlying immune mechanisms of pneumococcal vaccines. Insight into the underlying immune mechanisms of vaccines could improve future vaccine design, e.g. by refining dosing intervals. Objective Determine timing of peak germinal centre B cell frequency following pneumococcal vaccination. Main trial endpoints The main trial endpoint is represented by the frequency of germinal centre B cells (BGC) in lymph node aspirates at various time points after vaccination, as measured by spectral flow cytometry. Both total BGC cells and S. pneumoniae polysaccharide-specific BGC frequencies will be determined. Trial design Pilot intervention study without a comparator. Trial population Healthy individuals between the age of 20 - 40 Interventions Subjects will be vaccinated once with Prevenar13. FNA of the draining lymph node will be performed and blood will be drawn at baseline, followed by weekly collection during the first four weeks, every other week between weeks 4 - 8 and a final collection time point after 12 weeks, resulting in a total of 8 sampling time points over the course of three months. Draining lymph node size will be assessed by ultrasound every other day during the first two weeks and then alongside lymph node FNA for the remainder of the study.
This study will examine the feasibility and acceptability of an innovative game-based intervention designed for families of youth aged 11-14 to promote HPV vaccination; will explore changes in key outcomes and related measures; and will identify factors contributing to or impeding effective implementation in health clinic settings. The intervention and its approach have the potential to reduce health disparities in HPV-associated cancers in youth via low-cost technology and timely intervention.
The purpose of this study is to evaluate the safety and immunogenicity of the investigational medicinal product, CVI-HBV-002.
The purpose of this study is to evaluate the safety and immunogenicity of the investigational medicinal product, CVI-VZV-001.
The goal of this pilot clinical trial is to determine feasibility and explore whether financial incentives paid to primary care patients for completing colorectal cancer screening increase completion of colorectal cancer screening. The main questions it aims to answer are: - Do patient financial incentives for completing colorectal cancer screening increase screening completion? - Does a patient financial incentive for colorectal cancer screening offered alongside patient financial incentives for COVID-19 and flu shots increase completion of those shots? Participants who are due for colorectal cancer screening will receive telephone outreach from primary care staff who will offer a stool-based colorectal cancer screening. Participants will be randomly assigned to either Group 1 or Group 2. Group 1 participants will be offered financial incentives for completing COVID-19 and flu shots within 2 months of enrollment. Group 2 participants will be offered financial incentives for completing a COVID-19 shot, a flu shot, and colorectal cancer screening within 2 months of enrollment. Researchers will compare to see if completion of a COVID-19 shot, a flu shot, and colorectal cancer screening is different between the two groups.
The goal of this clinical trial is to explore the coadministration of oral typhoid fever (Vivotif®) and cholera (Dukoral®) vaccines in healthy volunteers aged 18-65 years. The main question it aims to answer is: • Does coadministration impact the immune responses to Vivotif® and Dukoral® vaccines Participants will: - receive either oral typhoid fever (Vivotif®) or oral cholera (Dukoral®) vaccines or both simultaneously - give blood samples for immunogenicity analyses - participate in adverse event follow up Researchers will compare those receiving only one of the vaccines to those receiving both simultaneously to see if coadministration has an impact on antigen-specific responses measured with: - ELISPOT (plasmablast responses specific to Salmonella typhi, Vibrio Cholerae and Enterotoxigenic Escherichia coli) - ELISA (antibodies in lymphocyte supernatants (ALS) and serum antibodies specific to vaccine antigens)
Community members ages 18 - 45 years old from the El Paso, Texas, U.S.-Mexico Border Region will be recruited to compare psychoeducational multimedia interventions focused on the human papillomavirus (HPV). Our hypothesis is that adults who view culturally tailored multimedia stories encouraging HPV vaccination will report higher vaccine uptake rates.