Active clinical trials for "Influenza, Human"

This study will investigate response to influenza vaccines in monozygotic and dizygotic twins of different ages.

In this exploratory study, investigators will be looking at immune response differences between age groups and between the two different influenza vaccines given to identical twins, vaccine-naive young adults and elderly participants.

This study will examine the immune responses to the seasonal influenza vaccine in single cells of the nasal passages when compared with cells in circulating blood.

The purpose of this study is to test the effectiveness of brief face-to-face patient education in increasing uptake of influenza vaccine among Chinese elderly in the community.

This randomized, partially-blinded, active comparator-controlled was conducted at multiple sites globally. The composition of QVLP used in this study includes a mix of recombinant H1, H3, and two B hemagglutinin proteins expressed as VLPs and is based on the 2020-2021 influenza virus strains. In this study, 3 dose levels (15 μg/strain, 30 μg/strain, and 45 μg/strain) of QVLP were planned to be tested in combination with 2 dose levels of AS03 adjuvant (full and half dose) in a single-dose regimen to select a dose level of QVLP and adjuvant dose level-combination that is safe and effective for further development. Participants participated in this study for up to approximately 13 months, during which the first visit was scheduled for screening (up to 7 days in advance of vaccine administration) and the second visit on Day 0 was scheduled for vaccine administration. Telephone contacts were made on Day 1, Day 8, and monthly (starting after Day 28) until the end of the study for safety assessments, including concomitant medication use review. Blood draws at the clinic site for key safety assessments were made on Day 3, and Day 28 and for key immunogenicity assessments on Day 0, Day 28, Day 182 (6-month follow-up), and Day 365 (12-month follow-up).

The study is designed to assess whether selenium supplementation can boost the immunity response to influenza vaccination in healthy adults. This is a randomized, prospective study enrolling a total of 60 healthy subjects, 18-55 years old.

This trial is taking place in Los Angeles, CA at clinics within the UCLA Health System. The study design is a 2x2 nested factorial design. Patients will be randomized into 1) receiving text based reminder messages, 2) portal-based reminder messages or 3) the control group. Patients randomized to the intervention arms will receive reminders if they are due for influenza vaccine. Nested within the reminder arms (text or portal), we will have 2 additional components for which patients will be randomized separately: A direct scheduling link within the reminder letter enabling the patient to schedule an influenza vaccine only visit (direct scheduling link vs. no direct scheduling link). A pre-appointment reminder, encouraging patients to ask for their influenza vaccine at their upcoming appointment (pre-appointment reminder encouraging influenza vaccination vs. standard pre-appointment reminder not mentioning influenza vaccination) Despite the Advisory Committee on Immunization Practices (ACIP) recommendation in 2010 that all people above 6 months of age should receive an annual flu vaccine, vaccination rates remain low: at 6m-4.9 yrs. (70%), 5-17.9 yrs. (56%), 18-64.9 yrs. (38%), and >65 yrs. (63%). The investigators will assess the effectiveness of MyChart R/R messages and text R/R messages as compared to the standard of care control (no messages).

This research aims to identify which behavioral science strategies are most effective at increasing flu vaccination rates overall and based on patients' individual characteristics. Past behavioral science interventions have shown promise in increasing flu vaccinations. For example, successful interventions have encouraged people to make concrete plans for when they will get a flu vaccination, sent automated calls or text messages reminding patients to get a flu vaccination , or provided financial incentives for getting vaccinated. Although these results are promising, these studies have been conducted in isolation on different populations, which makes it difficult to compare their interventions' effectiveness or to have enough power to reliably detect differing responses to interventions based on individual characteristics. This research will simultaneously test 22 different SMS interventions to increase flu vaccinations compared to a holdout control condition in a "mega-study" and apply machine learning to identify which interventions work best for whom. The interventions are designed by behavioral science experts from the Behavior Change for Good Initiative (BCFG), Penn Medicine Nudge Unit (PMNU), and Geisinger Behavioral Insights Team (BIT). Customers of a large retail pharmacy who received a flu shot from the pharmacy last year and receive SMS notifications will be included in this study. We expect this to include approximately 1.2 million participants. The specific aims of this research are to identify (1) which behavioral science strategies effectively increase flu vaccination rates overall, and (2) which strategies are most effective for different subgroups (e.g., based on age, gender, race).

This is a randomized, double-blind, placebo-controlled Phase 1b study to evaluate safety and immunogenicity of the investigational Sing2016 M2SR H3N2 influenza vaccine delivered intranasally to a healthy adult population age 50 to 85 years.

The immune system response needs to be forceful but also balanced for a rapid recovery from infection which avoids harmful overreactions. Innate immunity can adapt and respond more efficiently to secondary exposures, thanks to epigenetic and metabolic reprogramming, namely "trained immunity". ABBC1 is a combination of beta-1,3/1,6-glucan with inactivated Saccharomyces cerevisae rich in selenium and zinc for training immunity. ABBC1 includes repurposed synergistic yeast-based ingredients: a unique ß-1,3/1,6-glucan complex and a consortium of probiotic Saccharomyces cerevisiae, rich in Selenium and Zinc. ABBC1 induces trained immunity due to its specific chemical and tridimensional structure: its ß-glucan complex interacts with specific receptors in immune cells, provoking a release of cytokines and priming phagocytosis. Simultaneous activation of these pathways activates innate immunity and counteracts cytokine storm. ABBC1 provides highly bioavailable selenium and zinc, micronutrients with a critical role in an optimal immune responsiveness to allergy, infection, and vaccines. ABBC1 possesses proven microbiome modulating properties, which revert in immune training. Due to its high tolerance, safety and immediate availability, ABBC1 is an ideal candidate for complementary management of geriatric patients with seasonal influenza viruses or COVID-19, or to improve the immune response in the general population receiving the influenza or Covid-19 vaccines. The absence of drug interactions in ABBC1 allows a dosage that is fully compatible with the medication prescribed for all types of patients, including the elderly who are frequently polymedicated, and allows adding an additional therapeutic tool in the fight against the pandemic. This study assesses the benefits of a nutritional supplementation with ABBC1 in volunteers receiving the influenza vaccine during autumn 2020 and the Covid-10 vaccine during winter 2021.