View clinical trials related to Influenza, Human.
Filter by:The purpose of this study is to describe the immunogenicity and safety of the cell culture-derived influenza vaccine compared with the egg-derived influenza vaccine among subjects. To describe the immunogenicity, antibody levels are evaluated by hemagglutination inhibition(HI) assay from sera obtained pre-vaccination and 21 days post-vaccination. To describe the safety, the time of onset and duration of local and systemic solicited adverse events are assessed and reported. Unsolicited adverse events and serious adverse events are collected and categorized throughout the study period.
The purpose of this study is to evaluate the antiviral effect, as measured by viral titer in nasal secretions in adults with acute uncomplicated seasonal influenza A following administration of VX-787.
Recombinant hemagglutinin has been shown to induce protective neutralising antibodies against avian influenza virus but is relatively non-immunogenic. An ideal pandemic avian influenza influenza vaccine would combine hemagglutinin antigen with an appropriate adjuvant to increase its immunogenicity. This Phase 1 study will collect preliminary human safety and efficacy data on combined formulations of recombinant hemagglutinin with Advax adjuvant formulations administered by intramuscular injection
The purpose of this study is to determine the duration of viral shedding in hospitalized patients with influenza virus, treated with oseltamivir.
Prospective cohort study to evaluate safety and immunogenicity of the fragmented, inactivated trivalent Influenza vaccine produced at Butantan Institute in healthy adults and elderly. The study will include a total of 120 participants: 60 participants aged 18 to 59 years in the healthy adults group, and 60 participants aged older than 60 years in the elderly group.This study will evaluate the safety of one dose of the fragmented, inactivated trivalent Influenza vaccine in the first 3 days after vaccination, as well as its immunogenicity 21 days after vaccination.
The purpose of this study is to determine the immune response of three dose levels of the Quadrivalent VLP vaccine in healthy young (18-49) adults. The study is broken down into four treatment groups. Each group will enroll 100 subjects, for a total of 400 subjects. Groups A-C will receive one of three dose levels of the Quadrivalent VLP vaccine, and Group D will receive a commercially available trivalent influenza vaccine (TIV). The study will also evaluate the safety and tolerability of the Quadrivalent VLP vaccine formulations.
There is no standardized method for evaluating the symptoms of influenza. A standardized instrument for measuring influenza symptoms, with appropriate scientifically derived content and construct validity would have value for public health in terms of use as a validated outcome measure in interventions to treat or prevent influenza. The instrument also could serve as part of an overall measure of severity of illness in influenza. Previous efforts in participant reported outcomes (PRO) for influenza (i.e. Flu-PRO Stage I and Stage II) focused on the elicitation and evaluation of items for inclusion in the instrument. The overarching objective of this protocol - Flu-PRO Stage III - is to conduct instrument validation to evaluate item properties and, if need be, reduce the number of items, and quantitatively validate the performance of the final measure.
This is a randomized, double-blind, placebo-controlled study that will investigate the safety and clinical activity of a single intravenous (IV) dose of MHAA4549A in adult participants hospitalized with severe influenza A in combination with oseltamivir versus a comparator arm of placebo with oseltamivir.
This is a single-site, randomized, double-blind, placebo-controlled study of Multimeric-001 in thirty six (36) volunteers 50-65 years of age. All subjects will receive an intramuscular (IM) injection, in each one of three visits, with a 21±2 days interval between treatments.
The purpose of this study is to determine if the administration of flu vaccine using Needle-Free is equivalent to Needle and Syringe administration as measured by laboratory tests of immune response.