View clinical trials related to Influenza, Human.
Filter by:Vaccines are used to prevent infectious diseases worldwide. Unfortunately, many vaccines, like the flu vaccine, are less effective in older adults. This single-centre open label partially randomised, partially placebo-controlled trial evaluates the differences in immune response between young and older adults after vaccination with a quadrivalent inactivated influenza vaccine and an adjuvanted herpes zoster vaccination. Exploring the underlying mechanisms between the differences in immunogenicity can provide important information for future vaccine development.
Objective: Veno-venous ECMO has been used as a rescue therapy for patients with severe ARDS associated to influenza A H1N1 and COVID19 viral pneumonia. Little is known about outcome of these patients who required extracorporeal support. Research question: To compare outcome of patients who required VV ECMO for Covid19 and H1N1 associated ARDS
The primary objective of the study is to estimate the reporting rate of suspected Adverse Drug Reactions (ADRs) occurring within 7 days following routine vaccination with VaxigripTetra® and Efluelda®, respectively, during the Northern Hemisphere (NH) influenza season 2021/22. The secondary objectives of the study are: - To estimate the reporting rates of suspected ADRs occurring within 7 days following routine vaccination with VaxigripTetra® according to the pre-defined age groups. - To estimate the reporting rates of serious suspected ADRs after vaccination with VaxigripTetra®, and Efluelda®, respectively, at any time following vaccination, within the Enhanced Passive Safety Surveillance (EPSS) period. - To compare vaccinees' reporting rates of suspected ADRs observed during the NH influenza season 2021/22.
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.
This is a multi-center, randomized, single-blinded, prospective, parallel group intervention study to investigate whether methotrexate (MTX) discontinuation for 1 week is non-inferior to MTX discontinuation for 2 weeks in regard to satisfactory vaccination response to a seasonal influenza.
This is a Phase 3b, multicenter, randomized, double-blind, parallel group, placebo-controlled study designed to investigate the potential effect of tezepelumab (210 mg subcutaneous [SC] every 4 weeks [Q4W]) on antibody responses following seasonal quadrivalent influenza virus vaccination in the fall/winter 2021-2022 in the USA.
This Phase 2a clinical trial is designed to evaluate the immunogenicity and the safety of one administration of OVX836 influenza vaccine at different dose levels (180µg, 300μg and 480μg) in order to assess the dose response of the OVX836 influenza vaccine.
This study will be divided into two substudies - Substudy A (SSA) and Substudy B (SSB) Substudy A This is a Phase 1 randomized substudy to evaluate the safety and immunogenicity of monovalent influenza modRNA vaccine (mIRV) and bivalent influenza modRNA vaccine (bIRV) at various dose levels, and quadrivalent influenza modRNA vaccine (qIRV), in participants 65 to 85 years of age. Participants will receive at Vaccination 1 either: - 1 of 4 dose levels of mIRV (either A or B Strain), - 1 of 4 dose levels of bIRV (containing both A and B strains), - qIRV (at 1 dose level), or - A licensed quadrivalent influenza vaccine (QIV). At approximately 8 weeks following Vaccination 1, participants will be unblinded and QIV (Vaccination 2) administered to participants not having previously received this at Vaccination 1. Additionally, participants who previously received QIV at Vaccination 1 will receive one of the following for Vaccination 2: - mIRV encoding A strain at dose level 4, or - mIRV encoding B strain at dose level 4. Substudy B This is a randomized substudy to evaluate the safety and immunogenicity of the following vaccination schedules in participants 65 to 85 years of age: 2-Visit Schedules - 2 doses of qIRV (at a dose level 1), administered 21 days apart. - 2 doses of licensed QIV, administered 21 days apart (as a control group) - A dose of licensed QIV following by a dose of bIRV encoding 2 A strains at dose level combination 1 or 2, administered 21 days apart. 1-Visit Schedules - A dose of licensed QIV administered concurrently in the opposite arm with bIRV encoding 2 A strains at dose level combination 1 or 2. - A dose of bIRV encoding 2 A strains administered concurrently in the opposite arm with a dose of bIRV encoding 2 B strains.at dose level 1. - A dose of qIRV encoding 2 A strains and 2 B strains at dose level 2 (at one of two possible dose level combinations). - A dose of qIRV encoding 2 A strains and 2 B strains at dose level 3. - 1 dose of licensed QIV (as a control group). Substudy B In participants 18 to 64 years of age: -A dose of qIRV encoding 2 A strains and 2 B strains at a dose level combination 1 or 2.
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 was a phase IV, multi-center, open-label study. The study collected serum samples from children 6 months to less than (<) 9 years of age who received Fluzone Quadrivalent vaccine and adults greater than or equal to (>=) 65 years of age who received Fluzone High-Dose Quadrivalent vaccine for submission to CBER to aid in the influenza vaccine strain selection process.