View clinical trials related to Influenza, Human.
Filter by:This is a Phase 1 randomized, single center, dose-escalation study designed to evaluate the safety and immunogenicity of live, replication competent recombinant Adenovirus type 4-H5N1Influenza Vietnam 1194 Hemagglutinin (HA) (Ad4-H5-Vtn). Determining the optimal route and dose for this recombinant platform will greatly accelerate investigations of this vector as an influenza vaccine and an HIV vaccine platform. Intranasal and tonsillar administration of the vaccine will be separately assessed. The oral enteric-coated capsule will also be assessed in 10 outpatients using similar blood sampling for comparison. The Ad4-H5-Vtn orally administered as enteric-coated capsules has already been evaluated in an ascending dose Phase 1 study, in dosages as high as 10(11) viral particles (vp). The primary goal of this study is to evaluate safety of ascending dosages of the Ad4-H5-Vtn vaccine following intranasal and tonsillar administration. A dosage or dosages will be selected to further evaluate the humoral, cellular, and mucosal immune responses against both the vector and the inserted gene. The Ad4-H5-Vtn will be initiated at 10(3) vp. Once safety is established at the initial dose, a second round of testing will begin at the next ten-fold higher dose. The Ad4-H5-Vtn vaccine will be assessed in three participants at each dosage level. The maximum viral dose administered by the tonsillar route will be 10(8) vp. In addition to clinical and laboratory monitoring of safety, the principal assessments will be shedding of the Ad4-H5-Vtn virus in rectal, cervicovaginal, throat, and nasal swabs, and assessment of the antibody (mucosal and systemic) response to the HA and to the Ad4 virus. When safety has been confirmed in all three participants at a given dosage level, the next higher dose group is enrolled. If one grade 3 or greater toxicity (or pre-specified Grade 2 toxicity, see Section 3.4) attributable to the vaccine is observed, the group will be expanded at that dose. If a second attributable grade 3 or greater toxicity (or pre-specified Grade 2 toxicity, see Section 3.4) is observed, the dose will be reduced one level and the group will be expanded. Up to 25 Ad4-seronegative individuals will be enrolled at the maximum tolerated dose to fully evaluate safety and immunogenicity in the protocol. All participants will be followed for 28 days following immunization, and again at 8 and 26 weeks to evaluate any long-term toxicity and persistence of immunity. Tonsillar Participants will receive a booster dose of vaccine [SK1]at the 26-week visit and be seen for follow-up visits at Weeks 30 and 34. Household and intimate contacts will also be enrolled and monitored for Adenovirus and HAI antibodies.
H5N1 is an influenza virus that has the potential to cause an influenza pandemic. This study will evaluate the safety and immune response to an H5N1 influenza vaccine in people who have previously received one of two versions of an H5N1 vaccine or have previously received an H7N3 vaccine and in people who have not previously received any live attenuated influenza vaccine (LAIV).
The purpose of this study is to evaluate the immunogenicity and the safety of GlaxoSmithKline (GSK) Biologicals' investigational quadrivalent split virion influenza vaccine FLU-Q-QIV in adults 18 years of age and older.
The purpose of this study is to evaluate the efficacy, immunogenicity and safety of GSK Biologicals' influenza candidate vaccine GSK2321138A when compared to non-influenza vaccine comparators in children 6 to 35 months of age. Recruitment will encompass at least 4 independent cohorts: a first cohort in the Northern Hemisphere (2011-2012), a second cohort in subtropical countries (2012), third cohort in the Northern Hemisphere (2012-2013) and a fourth cohort and additional independent cohorts possibly in NH countries (end 2013) and subtropical countries (beginning 2014).
This is a open label, prospective, pair comparison, randomised, multi-centre trial. The primary aim of this study to is to clinically validate the sensitivity and specificity of the Respirio Flu Test (RFT) in detecting Influenza A as compared with (a) the best available rapid Influenza A test in the market Quidel QuickVue (QQV) and (b) the gold standard for identifying Influenza A infection Polymerase Chain Reaction (PCR). The secondary aim is to clinically validate the sensitivity and specificity of the Respirio Flu Test (RFT) in detecting Influenza B as compared to QQV and PCR.
The objective of this study was to assess the feasibility and effectiveness of using a statewide immunization information system (IIS) to send seasonal influenza vaccine reminders from Local Health Departments (LHDs), targeting children with high-risk conditions.
The aim of the study is to evaluate the safety and immunogenicity of the 2011-2012 formulation of Fluzone and Fluzone High-Dose vaccines in participants aged 65 years and older. Objectives: - To describe the safety of Fluzone vaccine and Fluzone High-Dose vaccine among adults ≥ 65 years of age. - To describe the immunogenicity of Fluzone vaccine and Fluzone High-Dose vaccine among adults ≥ 65 years of age.
The Center for Vaccine Development - Mali is interested in learning if vaccinating a pregnant woman against influenza will protect her infant against this disease. The investigators know that influenza infection, the "flu", affects pregnant women and their infants in Mali. The illness known as flu is caused by a germ (virus) that is passed easily among people. The flu causes symptoms such as fever, cough, sore throat, runny nose, and body aches. Certain groups of people, such as pregnant women and infants, are at risk for having severe disease when they get the flu. Vaccination against influenza is not routinely available to pregnant women in Mali although it is recommended. Women who wish to participate will have 5 visits to the clinic and weekly visits to the home to follow the health of the woman and her infant when it is born. The investigators will also ask permission to make weekly visits to all children under 5 years of age to follow their health as it relates to influenza infection.
This study is a randomized, double-blind, ascending dose, placebo-controlled, incomplete crossover, single and multiple dose study in healthy Japanese male subjects to assess the pharmacokinetics and safety/tolerability of single and multiple intravenous administration of GR121167. Serial blood samples and pooled urine samples for the determination of GR121167 concentration will be collected and safety assessments will be performed for each treatment period. The pharmacokinetics and dose proportionality of GR121167 after single intravenous administration of GR121167 at the dose levels of 100 mg, 300 mg and 600 mg will be assessed. In addition, in the final treatment period (600 mg), twice daily intravenous administrations for 5 days will be also conducted and the pharmacokinetics and accumulation will be assessed.
This study will evaluate safety and immunogenicity of surface, antigen, inactivated, influenza vaccine produced in mammalian cell culture when administered to adult and elderly subject.