View clinical trials related to Influenza, Human.
Filter by:To evaluate the safety and immunogenicity of quadrivalent influenza virus split vaccine in healthy population aged 3-8 years following different immunization procedures.
AIGI (Adaptive Immune Response to Seasonal Influenza Vaccination) is a prospective clinical study aiming at studying the kinetics of vaccine-specific antibody production after seasonal influenza vaccination in health care workers.
Study of the Reactogenicity, Safety and Immunogenicity of Flu-M Inactivated Split Influenza Vaccine in Volunteers Aged 18-60 Years
Pancreatic cancer (PC) remains a dreadful disease due to its often advanced stage at diagnosis and poor sensitivity to chemotherapy. Progression after 1. line chemotherapy is inevitable in patients with advanced PC, and treatment options for patients who progress after 1. line chemotherapy are limited. Considering the emerging role of the tumor microenvironment, the combination of checkpoint blocking antibodies with immunomodulation of the tumor microenvironment could lead to better responses in tumor historically resistant to radiation and checkpoint blocking antibody approaches as single modalities. Influenza vaccination in cancer patients receiving immune checkpoint inhibitors resulted in a better survival, irrespective of the anticancer treatment outcome. Influenza vaccine facilitates both T- and B cell activation and drives interferon-gamma response, supporting the rationale for combining of influenza vaccine with immune checkpoint inhibition and radiation (NCT02866383). Based on these considerations, the proposed treatment with SBRT of 15 Gy in combination with nivolumab, ipilimumab and influenza vaccine may have the potential to provide meaningful clinical benefit by generating durable clinical responses, thereby improving quality of life (QoL) and potentially extending survival.
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.
Cellular and humoral immune responses before and after seasonal influenza vaccination will be assessed. Each year, up to 100 participants will be enrolled. To study age-specific differences in immune responses, participants with various years of birth will be enrolled. The investigators hypothesize that humans with different birth years will mount antibody and cellular responses of different specificities following seasonal influenza vaccination.
Popular topic：Clinical study of recombinant Novel Coronavirus vaccine (CHO cell) combined with influenza vaccine. Research purpose:Main purpose:To evaluate the immunogenicity of recombinant Novel Coronavirus vaccine (CHO cells) combined with influenza vaccine in people aged 18 years and over. Secondary purpose:To evaluate the safety of recombinant Novel Coronavirus vaccine (CHO cells) combined with influenza vaccine in people aged 18 years and over. Overall design:An open experimental design was adopted in this study, and 300 subjects were planned to be enrolled. To evaluate the immunogenicity and safety of recombinant Novel Coronavirus vaccine (CHO cells) in combination with influenza vaccine. Study population:The study involved people 18 years of age and older. Test groups:A total of 300 cases were enrolled. 240 patients in 18-59 years old group, 60 patients in ≥60 years old group. There were 150 cases in group A, 120 cases in 18-59 years old group, and 30 cases in ≥60 years old group. There were 150 cases in group B, 120 cases in 18-59 years old group and 30 cases in ≥60 years old group.
Molecular techniques for respiratory virus detection have already shown benefits in terms of sensitivity gained in comparison to conventional techniques. Recent progress has made it possible to shorten turnaround time (TAT) and to allow delivery of results in a timely manner, especially in comparison to cell culture and direct fluorescence assays (DFA). However, the cost of these molecular assays is usually not taken in charge by public health insurance system. This could be partly explained by the fact that molecular techniques have not clearly shown cost-effectiveness. Results of molecular tests for influenza viruses and RSV, if delivered rapidly, in the emergency room (ER), would most likely help avoid antibiotic use and ancillary test prescription, improve antiviral prescription and shorten length of stay in the ward by facilitating discharge or cohorting of hospitalized patients. The goal of this study is to assess the performances of Roche Cobas® Liat Influenza A/B & RSV assay, to appraise its clinical impact and to evaluate its cost effectiveness.
Assessment of the effect reached with the different doses of AV5080 on the duration and severity of influenza symptoms based on the incidence of their resolution within 96 hours from study treatment initiation compared to Placebo. The absence of influenza symptoms or their reduction to mild severity for at least 24 hours indicates the resolution of influenza.
To evaluate the efficacy of AV5080 versus Placebo based on time to symptom resolution in patients with uncomplicated influenza.