Active clinical trials for "Influenza, Human"

The purpose of this study is to investigate the effectiveness, safety, and tolerability of an influenza vaccine. Influenza is a highly infectious disease that occurs throughout the world in the winter months. Infection with an influenza virus is a major public health threat as it has the ability to spread rapidly and affect large numbers of people. Up to 1359 healthy adults ages 18 to less than 65 years old will participate in this study for up to 24 days. Volunteers will receive an injection of either influenza vaccine with thimerosal, vaccine without thimerosal, or placebo with thimerosal. Volunteers will be asked to document information about any health changes for 21 days following vaccination. Volunteers will return to the clinic on days 5 and 21 after vaccination to share this information with study staff. On day 21, volunteers will have a physical examination. Blood samples will be taken prior to vaccination and at Day 21 post-vaccination.

A study to investigate the incidence of influenza and influenza-related complications, in adults between 50-64 years and elderly adults 65 years and over vaccinated with Fluarix™

This phase IV protocol is designed to evaluate the safety, clinical tolerability and immunogenicity of the 2005-2006 formulation of three widely used conventional influenza vaccines in children aged 6 to 35 months

The purpose of this research is to study side effects and safety of a new H5N1 flu (bird flu) vaccine and to look at how well people's immune systems make antibodies to fight infection after they get the vaccine. Up to 300 healthy people who are working at Aventis Pasteur H5N1 virus vaccine production facility in Swiftwater, PA, during the flu season are being asked to participate. It is important for vaccine production workers to receive the vaccine in order to minimize the risk of this bird flu virus combining with the regular flu virus. Volunteers in this study will have a medical screening, 2 vaccinations a month apart, 2 blood sample collections (1 before and 1 after the vaccinations to compare), 5 clinic visits, and follow-up over 6 months. They will also complete a diary card and to write down their temperature once a day and any symptoms they have every day during the week after they get their second shot. They will also be asked to write down any drugs or medicines they take.

This study may determine whether laboratory studies of people's blood cells, who have received vaccines against H5 influenza, or "bird flu," will help to decide if the vaccines are going to be prevent disease effectively. About 232 people, 18 years and older, enrolled in the studies "A Randomized, Double-Blinded, Placebo-Controlled, Phase I/II, Dose-Ranging Study of the Safety, Reactogenicity, and Immunogenicity of Intramuscular Inactivated Influenza A/H5N1 Vaccine in Healthy Adults" and "in Healthy Elderly Adults" will participate. Participants may be involved in this study for about 14 months. Procedures may include blood draws, physical exams, and medical history reviews.

The purpose of the study is to evaluate safety, tolerability and immunogenicity (in a subset) following a dose of a trivalent subunit influenza vaccine produced either in mammalian cells or in embryonated hen eggs, in healthy adult and elderly subjects who received either vaccine one year before (2004) in the study V58P4.

This study is will gather critical information on the safety, tolerability, and the immunogenicity (capability of causing an immune response) of A/H5N1 (Bird flu) virus vaccine in healthy adults. Up to 400 healthy adults, aged 18 to 64, will participate. Each subject will participate for about 7 months and will be randomly placed in one of several different study groups receiving a different dose of vaccine or placebo. All subjects will receive two injections of their assigned study product, about 28 days apart, in the muscle. Subjects will keep a journal of their temperature and any adverse effects between study visits. A small amount of blood will also be drawn before the first injection, 7 days after each injection, 1 month after the first injection, and 1 and 6 months after the second injection.

The purpose of this phase IIb study is to demonstrate the consistency of three lots of an adjuvanted influenza vaccine candidate and to evaluate the safety of this vaccine compared to Fluarix™ administered intramuscularly in elderly aged 60 years old and above.

The objective of this study is to assess the safety and immunogenicity of 4 different doses of adjuvanted and non-adjuvanted mock-up pandemic influenza vaccine. Subjects will be enrolled sequentially into 3 study cohorts with 4 escalating doses of H5N1 hemagglutininin antigen (3.75 µg adjuvanted, 7.5 µg adjuvanted/non-adjuvanted, 15 µg adjuvanted/non-adjuvanted, 30 µg adjuvanted). Starting with the lowest dose level, subjects will receive 2 vaccinations (21 days apart) at the dose to which they were assigned. Subjects will be monitored for safety and for antibody response to the vaccine. A data safety monitoring board will review and evaluate all the safety data obtained for a dose level before allowing administration of the next (higher) dose.

The purpose of this study is to demonstrate the efficacy of GSK Biologicals' influenza vaccine (Fluarix™) administered intramuscularly in adults.