Active clinical trials for "Influenza, Human"

Based on the results from a previous formulation/dosage ranging trial, this phase II multicenter, open trial was designed to determine the safety and immunogenicity of two vaccine formulation/dosages with and without adjuvant 21 days after each vaccination in adults (18 to 60 years and in the elderly (> 60 years) as required by the European Medicines Agency (EMEA) guideline. The antibody persistence until the booster vaccination at 6 or 12 months will also be evaluated.

This study is designed to evaluate the immunogenicity, safety and tolerability of 2 doses of FLUAD-H5N1 vaccine compared to 2 doses of trivalent, interpandemic FLUAD, each administered 3 weeks apart.

The present study aims to evaluate the safety and immunogenicity of the new influenza subunit vaccine produced in Madin Darby Canine Kidney (MDCK) cells in healthy adult and elderly subjects.

This study evaluates the immunogenicity, safety and tolerability of an H5N1 vaccine with a seasonal trivalent influenza vaccine, containing the strains recommended by WHO for the 2007 influenza season in the Southern Hemisphere.

This study may provide safety information on a flu vaccine given to children and may provide immunogenicity information to add to what was collected in a previous flu vaccine study. Participants will include 55 healthy children, ages 2-10, who participated in 04-077 and received a placebo injection instead of the flu vaccine or were incompletely immunized. The study has 2 purposes: to make sure there are no serious side effects in children and to see how the immune systems react to the vaccine. Study procedures include up to 4 study visits, up to 9 follow-up phone calls, 2 blood samples to be collected during visits 1 and 3, and up to 3 vaccine injections in the arm or thigh muscle. Parents will be given a memory aid card to record side effects, temperatures, and medications. Parents will have the option for the child to receive a 3rd dose of vaccine if offered, at month 6. This booster shot will require a 6-month visit and participation for an additional 6 months.

The purpose of this study is to test the specific humoral response after an intramuscular and intradermal influenza vaccination in lung transplant recipients

To provide serum to the Food and Drug Administration (FDA) for use by FDA, the Centers for Disease Control and Prevention (CDC), and the World Health Organization (WHO) for characterization of circulating influenza strains. Observational Objectives: To describe the safety of the 2005-2006 pediatric formulation of Fluzone vaccine, given in the two-dose schedule in accordance with the Package Insert, in children aged ≥ 6 months to < 36 months. To describe the immunogenicity of the 2005-2006 pediatric formulation of Fluzone vaccine, administered in a two-dose schedule in accordance with the Package Insert, in children aged ≥ 6 months to < 36 months.

The purpose of this research is to compare reactions and antibody responses following receipt of different doses of the experimental influenza vaccine or standard influenza vaccine.

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 vaccination with four different adjuvanted GlaxoSmithKline influenza vaccines administered to elderly subjects. For immunogenicity and safety evaluations, healthy adults aged 18 to 40 years old and elderly aged 65 years and older will receive Fluarix™ and form the control groups of this trial.

Vaccination is currently the most effective mean of controlling influenza and preventing its complications and mortality in persons at risk. Because of the variable nature of influenza viruses, the composition of influenza vaccines changes almost every year, to target the 3 main circulating strains. Each year the influenza vaccine formulation may thus be different and clinical studies are mandated to ensure that the immunogenicity and safety of the vaccine formulated from the three annual circulating strains are similar to what was observed during the previous years. This study is designed to test the immunogenicity and reactogenicity of the Fluarix™ vaccine containing the influenza strains recommended for the 2006-2007 season.