Active clinical trials for "Influenza, Human"

The purpose of this study is to evaluate the antibody response to one and two doses of influenza A/H1N1v vaccine in healthy adults.

The purpose of this study is to assess the safety and immune response (body's defense against disease) to an experimental H1N1 influenza vaccine in healthy adult and elderly populations. The study will enroll up to 450 healthy adults ages 18 and older with no history of H1N1 infection or vaccination. Two hundred individuals will be 18-64 years old, and the other 200 will be greater than or equal to 65 years of age. Participants will be randomly assigned to 1 of 2 possible vaccine groups: group 1 will receive 15 micrograms (mcg) of H1N1 vaccine; group 2 will receive 30 mcg of H1N1 vaccine. Both groups will receive vaccine injections on days 0 and 21 in the arm muscle. Study procedures include: medical history, physical exam, maintaining a memory aid, and blood sample collection. Participants will be involved in study related procedures for approximately 7 months.

This study will evaluate the safety and immunogenicity of different combinations of A/H1N1 S-OIV (swine flu) vaccine in healthy young children.

This study is designed to test the safety and immunogenicity of Fluviral® (2009 - 2010 Season) in adults aged 18 to 60 years and over 60 years.

The purpose of this study is to describe the immunogenicity of the prototype Quadrivalent Influenza Vaccine (QIV) compared with the 2009-2010 Trivalent Influenza Vaccine (TIV) and the 2008-2009 TIV among children and adults. Primary Objective: To describe the immunogenicity of the prototype Quadrivalent Influenza Vaccine (QIV) compared with the 2009-2010 Trivalent Influenza Vaccine (TIV) and the 2008-2009 TIV among adults. Observational Objectives: To describe the safety of the 2009-2010 TIV among subjects ≥6 months to <5 years, 18-60 years, and ≥ 61 years of age, and to describe the safety of 2008-2009 TIV and prototype QIV Fluzone® vaccines among subjects 18-60 years and ≥ 61 years of age. To describe the immunogenicity of the 2009-2010 TIV vaccine among subjects ≥6 months to <5 years, 18-60 years, and ≥61 years of age, and to describe the immunogenicity of 2008-2009 TIV and prototype QIV vaccines among subjects 18-60 years and ≥61 years of age.

This is a Phase IIa open label, non placebo controlled, non-randomised controlled challenge study. The primary objective of this study is to assess the safety of a new influenza vaccine, MVA-NP+M1, when administered as a single dose to healthy volunteers. Initially two volunteers will be vaccinated and challenged with Influenza, followed by vaccination of a further 12 volunteers and an Influenza challenge of those 12 along with 12 non-vaccinated controls.

This present study, a phase II, open label study will evaluate the immunogenicity, tolerability and safety of an adjuvanted, inactivated Novel Swine Origin A/H1N1 Monovalent Subunit Influenza Virus Vaccine in healthy subjects aged 18 years and above. This study will explore the effect of the previous and concomitant exposure to a seasonal influenza vaccination to the immunogenicity and safety profile of two different doses of an adjuvanted H1N1sw vaccine.

This study will evaluate the safety and immunogenicity of booster doses of the two vaccines used to prevent Haemophilus influenzae type b infections in children 12-18 months of age.

The purpose of this study is to evaluate the immunogenicity and safety profile of CSL425 (CSL's 2009 H1N1 influenza vaccine) in a healthy pediatric population.

A single center, stratified, randomized and double-blind phase IV clinical trial is to be conducted in healthy elders (equal to or more than 61 years), adults (18-60 years), adolescents (12-17 years) and children (3-11 years) to evaluate the safety and immunogenicity of Sinovac's split-virion or whole-virion novel influenza A (H1N1) vaccines.