View clinical trials related to Influenza, Human.
Filter by:Influnza vaccination is highly recommended over the age of 50,but is only 50% efficatious among the elderly. A Vaccine given as a nasal spray may improve compliance and local immunity.Liposomes are lipid particles that may serve as carriers for the vaccine and together they enhance the local immune response in mice when given as nasal spray.This study aims to examine the safety and nasal and humoral responses to the nasal vaccine compared to the commercial muscular vaccine.
The purpose of this study is to compare two licensed influenza vaccines (Fluzone and Fluarix) in terms of the immune response elicited and the safety/ any symptoms that may occur for up to six months after vaccination.
As a result of the recent supply shortages in the U.S., as well as an anticipated increase in demand during the coming years, GSK Biologicals is pursuing licensure of Fluarix in the U.S. under the accelerated approval process; marketing approval most likely will be granted before the start of this clinical trial. GSK proposes to support U.S. licensure of Fluarix with this confirmatory post-marketing study. The purpose of the study is to evaluate the efficacy of a single dose of Fluarix in preventing influenza in adults during the 2005/2006 Influenza season.
- To compare immune responses to measles, mumps, rubella, and varicella antigens following vaccination in children who receive FluMist concurrently with MMRIIÒ and VARIVAXÒ and in children who receive an intranasal placebo mist concurrently with MMRIIÒ and VARIVAXÒ (Group 2 vs. Group 1). - To compare immune responses to the three strains of influenza (H1N1, H3N2, and B) following a two dose regimen of FluMist in children who receive the initial FluMist dose concurrently with MMRIIÒ and VARIVAXÒ and in children who receive two doses of FluMist alone (Group 2 vs. Group 3).Secondary: - To assess the safety and tolerability of concurrent administration of FluMist with MMRIIÒ and VARIVAXÒ.
To demonstrate that the efficacy over a defined surveillance period against culture-confirmed influenza-illness caused by community-acquired subtypes antigenically similar to those contained in the vaccine, in adults aged at least 60 years at enrollment, of a single intranasally (IN) -administered dose of a liquid formulation of influenza virus vaccine,(CAIV-T) is non inferior compared with that of a single dose of commercially available influenza vaccine inactivated (TIV) administered intramuscularly (IM) prior to the anticipated commencement of the influenza season.
The primary objective of this study was to determine the proportion of subjects, seronegative to all three strains of influenza, as defined by a serum hemagglutination inhibition antibodies (HAI) antibody titer of <1:10, who shed each vaccine virus strain following a single dose of CAIV-T.
To assess whether CAIV-T was transmitted from vaccinated children to their unvaccinated contacts in a day care setting; and if so, to estimate the rate of transmission.
To perform a variety of assays on blood, nasal washes, and cells obtained from healthy children for the purposes of further investigation of immune responses generated by influenza virus vaccine, trivalent, types A and B, live, cold-adapted (liquid CAIV-T; Wyeth Lederle Vaccines, Marietta, PA). • To assess nasal swab specimens to detect vaccine virus shedding.
The primary objective of this study was to perform a variety of assays on blood, serum, nasal wash and cell samples obtained from healthy adult subjects for the purposes of developing assays for application in the further investigation of immune responses generated by influenza virus vaccine, trivalent, types A & B, live, cold-adapted (liquid formulation CAIV-T; Wyeth, Marietta, PA).
The purpose of this study is to determine the efficacy of the liquid formulation of CAIVT against culture confirmed influenza illness in healthy children aged at least 6 months and less than 36 months, attending day care centers in Europe. In addition, the trial provides the opportunity to investigate the effect of CAIV-T on acute otitis media, on healthcare resource utilization and economic resources.