Active clinical trials for "Influenza, Human"

The primary objective of this trial is to demonstrate the equivalence, in terms of immunogenicity, of three different industrial lots of the investigational vaccine thereby supporting consistency of the manufacturing process. Secondary Objectives: Immunogenicity To demonstrate that the investigational vaccine induces an immune response at least as good as the one induced by the reference vaccine, in terms of antibody titers. To assess the immunogenicity of the investigational vaccine using parameters defined in the European Medicines Agency (EMEA) Note for Guidance (CPMP/BWP/214/96). Safety: To demonstrate that the investigational vaccine is at least as well tolerated as the reference vaccine, in terms of defined safety profile. To describe the safety profile after vaccination. Comfort of the vaccination assessment: To assess the pain immediately after the injection using a Verbal Rating Scale. To describe the vaccination comfort after the injection using a -Patient-Reported Outcome questionnaire: the Vaccination Comfort Questionnaire.

As influenza vaccine efficacy is reported to be lower in elderly subjects compared to healthy adults, probably as a result of immunosenescence, there is a desire to devise ways to increase the current vaccines efficacy for this target population. Adjuvants are known to boost immune responses, thus representing one way to increase the efficacy of the current GlaxoSmithKline Fluarix™ influenza vaccine in elderly subjects. The purpose of this study is to evaluate the immunogenicity and the reactogenicity of a revaccination with the adjuvanted GlaxoSmithKline influenza vaccine administered intramuscularly about 1 year after administration of the first dose of vaccine. For immunogenicity and safety evaluations, subjects who have already received Fluarix™ during the preceeding year will receive a dose of commercial vaccine and will form the control group of this trial.

The present study aims to evaluate safety and immunogenicity of two doses, administered three weeks apart, of two influenza vaccines containing 7.5 micrograms or 15 micrograms of H5N1 influenza antigen, in non-elderly adult and elderly subjects.

This study will look at the safety, tolerability and what the body does to CS-8958 given to 40 healthy volunteers 18-55 years old. CS-8958 is a dry-powder investigational drug that is breathed into the lungs through an inhaler device. The researchers will collect information about any problems that volunteers have while taking the drug and about changes in blood pressure and how the heart is working. Volunteers will have breathing tests, physical examinations, and blood samples collected for laboratory tests. The researchers will also look at how much of the medication travels throughout the body versus how much stays only in the lungs. Doses of the medication will be tested at one level and then at higher and higher levels after a safety committee reviews the safety and tolerability information on volunteers prior to the next higher dose being given. Each volunteer will participate for up to 6 weeks from initial screening to the follow up visit and spend 7 days in the clinic.

Influenza (flu) viruses change continuously, therefore also the parts of viruses used in influenza vaccines can vary from year to year. In Europe, manufacturers/marketing holders of these vaccines are required to be involved in ongoing clinical trials and to present the results to the competent authorities each year. The current study is a phase IIIa clinical trial with a commercially available vaccine (Influvac®) supplied in pre filled syringes. It is part of the ongoing clinical trial program for Influvac® and will be done to assess the immunogenicity and safety and tolerability of next season's trivalent influenza subunit vaccine in two groups of healthy subjects: subjects aged >= 18 and <= 60 years and subjects >= 61 years of age (elderly).

Since influenza vaccines are normally administered every year because of the frequent change in their antigenic composition, the safety and immunogenicity profile of adjuvanted influenza vaccine need to be re-evaluated after repeated vaccine administration. In this study, subjects previously vaccinated with Fluarix or the influenza adjuvanted vaccine, will receive a booster dose with the 2006-2007 season's formulations of either Fluarix or the adjuvanted vaccine.

The purpose of this research study is to compare how the body reacts to different strengths of an H5N1 flu vaccine when given by different routes of injection (injection into the skin or into the muscle). It will also compare how antibodies (proteins produced by the body's immune system that recognize and help fight infections and other foreign substances in the body) are made after receiving the H5N1 flu vaccine. Participants will include 100 healthy adults, ages 18-40 years. Study procedures include blood samples and completing a memory aid documenting daily oral temperature and side effects for 7 days following each vaccination. Participants may be involved in the study for up to 13 months.

Clinical Trial in Two parts: Part 1: Phase I, Open-Label, Single-Center Study to Evaluate the Safety of an adjuvanted Influenza Vaccine When Administered to Elderly Subjects. Part 2: A Phase III, Randomized, Controlled, Observer-blind, Single-Center Study to Evaluate the Immunogenicity and Safety of an adjuvanted and a conventional Influenza Vaccine When Administered to Elderly Subjects.

The present study aims to evaluate safety, tolerability and immunogenicity of three lots of Chiron's cell-derived subunit influenza vaccine in healthy adult subjects as compared to a conventional egg-derived control vaccine licensed in Europe.

Background: Influenza vaccination is recommended in patients (pts) with cardiovascular disease, however there is a shortage of clinical studies proving its protective effect on clinical course of coronary artery disease (CAD). The aim of the study was to evaluate the effect of influenza vaccination on the incidence of coronary events in pts with CAD confirmed by coronary angiography.