Active clinical trials for "Influenza, Human"

Compared to young adults, the elderly mount a lower antibody response to vaccination. Thus, improvement of the immune response to influenza vaccination in this age group, which is at higher risk for influenza-related morbidity and mortality, represents an important unmet need. Primary Objectives: Immunogenicity: To demonstrate lot consistency of the Fluzone High Dose (Fluzone HD) manufacturing process through evaluation of the immune responses elicited by three different lots. To demonstrate the superiority of Fluzone HD vaccine compared to standard-dose Fluzone® vaccine. Secondary Objectives: Immunogenicity: To describe the seroprotection of Fluzone HD compared to that of standard dose Fluzone® vaccine. Safety: To describe the safety profile of Fluzone HD, in terms of solicited -, unsolicited adverse and serious adverse events post-vaccination. To describe clinical information on some additional defined criteria during the six months following vaccination.

The primary objective of this study is to estimate the relative efficacy and assess the safety of CAIV-T compared to TIV.

Avian influenza (AI), or bird flu, has recently become a major health concern in Asia and other parts of the world. The purpose of this study is to test the safety of and immune response to a new AI vaccine in healthy adults. Study hypothesis: Influenza A viruses are widely distributed in nature and infect a wide variety of birds and mammals. The direct transmission of avian influenza viruses from birds to humans has recently become a major health concern in Asia and other parts of the world, raising concern of a possible influenza pandemic in humans. This vaccine will evaluate the safety, infectivity and immunogenicity of Live Influenza A vaccine H9N2 (6-2) AA ca reassortant (A/chicken/Hong Kong/G9/97 x A/Ann Arbor/6/60 ca), a cold-adapted, live attenuated virus vaccine administered intranasally for the protection of humans against pandemic influenza viruses of the H9N2 subtype.

The purpose of this study is to clarify the preventive effects of catechin gargling on the influenza infection.

Study of the safety and immunogenicity (antibody producing capability) comparing inactivated influenza vaccine to placebo given to infants at 2 and 3 months of age. Infants will receive inactivated influenza vaccine at the same time as other vaccines on the routine immunization schedule. Infants will be randomized at enrollment to receive inactivated influenza vaccine or placebo at a 2:1 ratio. This study is double-blind, randomized, and placebo-controlled.

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.

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.

This study is to assess the safety of a bivalent vaccine of two new 6:2 influenza virus reassortants in healthy adults prior to the release of the trivalent vaccine (FluMist) containing them.

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).

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.