View clinical trials related to Influenza, Human.
Filter by:Since the onset of the 2009 pandemic, several observational public health investigations in Canada have identified evidence that suggests that adults, particularly younger adults, who have previously received seasonal influenza vaccine are at increased risk of infection with the 2009 pandemic strain of H1N1 (pH1N1). Investigations in Australia, the United States and the United Kingdom have not identified this effect. While it is not possible to have an answer to whether this affect is real prior to the second wave of the 2009 pandemic, it remains vital to future influenza vaccination programs that the hypothesis that, in 2009, seasonal vaccine increases or decreases the risk of pH1N1 infection be confirmed or refuted. The objective of this study is to determine whether Ontario adults aged 18-60 years who receive the 2009 seasonal influenza vaccine will be at a 2 fold or greater increased risk of infection with influenza pH1N1 during the second or third wave of the 2009 pandemic.
The objective of this study is to evaluate the immunogenicity and safety of GSK Biologicals' investigational influenza vaccine GSK2340274A following one dose and following a second dose, using the same dosage as has been used in the H5N1 development program in Japanese children aged 10-17 years and an alternative dose in children aged 6 months to 9 years.
The purpose of this study is to assess the safety and effectiveness (immune response) to a licensed H1N12009 influenza vaccine in aboriginal children and adults. The study will enroll 200 healthy adults (ages 20-59 years) and 75 healthy children (ages 6-35 months). Adults will receive one dose of a licensed H1N1 vaccine and children will receive two doses of a licensed H1N1 vaccine approximately 3 weeks apart. Study procedures include: medical history, blood samples and completing a memory aid. Participants will be involved in study related procedures for approximately 3 weeks (adults) or 6 weeks (children).
The purpose of this study is to compare the safety and effectiveness (immune response) to one or two doses of adjuvanted H1N12009 influenza vaccine in young children. An adjuvant is an additive that can boost the immune response. The study will enroll 300 children (ages 6-35 months). Participants will receive 2 doses of adjuvanted H1N12009 vaccine 3 weeks apart. Study procedures include: medical history, blood samples and completing a memory aid. Participants will be involved in study related procedures for approximately 6 weeks.
The purpose of this study is to assess the safety and effectiveness (immune response) to a licensed H1N12009 influenza vaccine in adults when given at the same time or prior to the seasonal influenza vaccine. The study will enroll 300 adults (ages 20-59 years). Participants will be randomized into 2 groups. One group will receive one dose of a licensed H1N1 vaccine and one dose of the seasonal influenza vaccine at the same time; the second group will receive the seasonal influenza vaccine 3 weeks after receiving the licensed H1N12009 influenza vaccine. Study procedures include: medical history, blood samples and completing a memory aid. Participants will be involved in study related procedures for approximately 3-6 weeks depending upon the group assignment.
This study is to identify the preferred vaccine dosage (of antigen and adjuvant) and schedule (one or two administrations) of the cell-derived H1N1sw monovalent vaccine in healthy children/adolescents based on European Medicines Agency's Committee for Medicinal Products for Human Use (EMEA/CHMP) criteria, and safety and tolerability.
A phase 3 study to obtain additional safety and immunogenicity data on Solvay's cell-derived seasonal trivalent subunit influenza vaccine in adult and elderly subjects without significant illnesses and to demonstrate consistency of the immunogenicity of the three lots of the same vaccine, comparison of cell-derived vaccine to Solvay's egg-derived vaccine including assessment of non-inferior immunogenicity
Influenza virus infections are a major cause of morbidity and mortality. The limited existing knowledge about the impact of influenza in immunocompromised patients suggests that they are at increased risk of influenza virus acquisition, of developing complications and of prolonged illness and viral shedding. However, some other data about the effect of antiviral agents on the infection course, and risk of resistance in immunocompromised children are lacking. The emergence of the pandemic H1N1 swine-origin influenza A virus has generated an additional need to study the epidemiology, clinical course and outcome of influenza infections in immunocompromised children. This study proposed to conduct a prospective observational clinical study to answer these questions.
The purpose of this research is to determine the effectiveness of the novel H1Nl influenza (inactivated/killed formulation) vaccine among both HIV-infected and HIV-uninfected persons. The administration of the H1Nl vaccination is not part of the study's procedures, but is being given as part of routine care.
The focus of this study is to assess the safety of GSK's H1N1 vaccine in real life conditions as soon as the vaccine is used, in a mass vaccination programme, and with a system for rapid generation, communication and evaluation of safety data. This study is a commitment to the European Medicines Agency (EMEA), as part of GlaxoSmithKline Biologicals' (GSK Biologicals') risk management plan for pandemic influenza vaccination.