Active clinical trials for "Influenza, Human"

The purpose of this study is to assess the safety and effectiveness (immune response) to a licensed H1N12009 influenza vaccine in HIV-infected adults. The study will enroll 150 adults (ages 20-59 years). Participants will be randomized into 2 groups and will receive either one dose or two doses of a licensed H1N1 vaccine. Study procedures include: medical history, blood samples and completing a memory aid. Participants will be involved in study related procedures for approximately 6 days.

This was a randomized, laboratory-blinded study in healthy male and non-pregnant female designed to investigate the safety, reactogenicity, and immunogenicity of an inactivated influenza H1N1 vaccine (AdimFlu-S). In the adult cohort, all volunteers were randomized in a 1:1:1 ratio to receive 2 injections of AdimFlu-S (A/H1N1) 15 mcg HA at 3 weeks apart, 2 injections of AdimFlu-S (A/H1N1) 30 mcg HA at 3 weeks apart or 1 injection of AdimFlu-S (A/H1N1) 15 mcg HA. In the elders cohort, all volunteers were randomized in a 1:1 ratio to receive 2 injections of AdimFlu-S (A/H1N1) 15 mcg HA at 3 weeks apart or 2 injections of AdimFlu-S (A/H1N1) 30 mcg HA at 3 weeks apart. Following immunization, safety was measured by assessment of adverse events for 6 weeks following the first vaccination, serious adverse events and new-onset chronic medical conditions through 7 months post first vaccination; and reactogenicity to the vaccines for 7 days following each vaccination. Immunogenicity testing included hemagglutinin inhibition (HAI) testing on serum obtained before first vaccination, and three and six weeks after first vaccination.

All marketed influenza vaccines are injected by the intramuscular (IM) route. This study will test whether an influenza vaccine is effective when injected by a route other than into the muscle. In order to prove this, the amount of antibodies in the blood will be measured before and after vaccination. In addition, the safety of both influenza vaccines will be tested by evaluating all serious reactions occurring after vaccination. The vaccine injected in this study is similar to the sponsor's marketed intramuscular influenza vaccine (Vaxigrip). In addition, the safety of both influenza vaccines administered by different routes will be tested by evaluating all adverse events and especially all serious reactions. Primary Objective: To demonstrate and compare the immune response of an influenza vaccine after a single dose when administered by different routes. Secondary Objectives: To describe the compliance of the immunogenicity of the vaccine with the European Medicine Agency (EMEA) after the first injection.

The purpose of this study is to evaluate the safety and immunogenicity of cell culture-derived, inactivated, subunit influenza vaccine in comparison to licensed Fluvirin vaccine administered to healthy adults ages 18 < 50 years.

This study compared full-dose Flu vaccine to half-dose Flu-vaccine during the 2004-2005 flu season.

A safety study to compare, over a 7 day period, the fever rates following one dose of either Influenza Virus Vaccine or placebo administered outside the influenza season to healthy children and adolescents aged 6 to less than 18 years.

To measure the effectiveness of influenza vaccination in school children by comparing, between target(i.e., children are offered FluMist) and control (i.e., children are not offered FluMist) school families.

The primary objective of this study was to perform a variety of immunological assays on blood, serum, nasal wash samples, and cells obtained from healthy adult subjects for the purpose of developing assays for application in the further investigation of immune responses generated by influenza virus vaccine, trivalent, types A and B, live, cold-adapted (liquid CAIV-T).

The purpose of this study is to determine the immunogenicity and safety profile of CSL Limited's Influenza Virus Vaccine compared to a US Licensed Comparator Influenza Virus Vaccine.

The aim of the present study is to assess the reactogenicity and immunogenicity of a thiomersal-free influenza vaccine. For comparison, a group of subjects is administered the standard formulation of Influsplit SSW® 2003/2004.