Active clinical trials for "Influenza, Human"

Severe influenza respiratory disease is increasingly recognized in children. Influenza hospitalization rates in high-risk infants, such as premature infants, are increased some five-fold over rates in other children. The recently-licensed live attenuated influenza vaccine (LAIV) promotes better immune responses than the trivalent inactivated vaccine, but can cause wheezing. The balance of risks and benefits for LAIV in extremely premature infants, who may be at increased risk for both influenza disease and vaccine side effects, is unknown. The specific aim of this project is to compare the immune response and reactions of trivalent, inactivated influenza vaccine (TIV) and live, attenuated, intranasal influenza vaccine (LAIV) in groups of former premature (PT), very (V) LBW and former full-term (FT) infants aged 24-35 months. The investigators hypothesize that the immune response in FT infants will be greater with LAIV than TIV, and that wheezing episodes will be no more than twice as frequent in LAIV as in TIV recipients. The study will enroll 14 former premature, VLBW infants and 14 former full-term infants. Children will be randomized to receive one dose either TIV or LAIV. Vaccine reactions will be measured. One to two teaspoons mL of blood will be drawn at 0 and 7-14 days from immunization, and less than one teaspoon of blood will be drawn at 28-42 days.

Seasonal influenza is responsible for many hospitalizations and deaths each year, despite effective antiviral treatments. Some individuals have medical conditions such as heart or lung diseases that make them particularly at risk of severe influenza infections that may result in hospitalization or death. Oseltamivir (Tamiflu) is used most often to treat flu, but there are still many hospitalizations, complications, and deaths even with treatment. This study evaluated the use of combination antivirals (amantadine, oseltamivir, and ribavirin) compared to oseltamivir alone in the treatment of influenza in an at-risk population.

Influenza poses a significant threat to individual and public health, and influenza vaccination with a trivalent inactivated influenza vaccine is widely recommended to children, adults at risks and elderly. Due to antigenic changes of influenza viruses, the virus strains used in interpandemic influenza vaccines are adjusted every year according to WHO (World Health Organization) and CHMP (Committee for Medicinal Products for Human Use) recommendations. Following a change in the vaccine antigen composition recommendation from the previous season, immunogenicity and tolerability of the newly composed vaccines are subject of evaluation in an annual clinical trial in non-elderly adult and elderly subjects according to the guidelines set by EMEA (CPMP/BWP/214/96).

The purpose of this study is to assess in healthy subjects the safety, tolerability, pharmacokinetics and immunogenicity of single escalating doses of CR6261, a monoclonal antibody against influenza A viruses.

The purpose of this study is to compare the safety profile in healthy volunteers of a single intravenous administration of TCN-032 as compared with placebo.

Background In preparation for a global influenza pandemic, there is an urgent need for representative data from populations and settings where the pandemic is most likely to arise. There are no data on oseltamivir efficacy from Asian urban slum populations concerning duration of illness and viral shedding, nor whether efficacy depends on starting treatment < 48 hours or ≥ 48 hours after illness onset. Finally, there are no data on the capacity of the drug, in such settings, to affect household and community transmission rates. Aims and Objectives This proposal aims to compare the duration of clinical illness among patients treated with oseltamivir vs placebo < 48 hours and ≥ 48 hours after illness onset. It will compare the duration of viral shedding among all treatment groups vs placebo, risk of transmission to household contacts by treatment group and whether neuraminidase inhibitor use creates resistance. Secondarily it aims to measure the effect on influenza. Design and Methods A double-blind placebo controlled clinical trial design among a population in an urban slum under current influenza disease burden surveillance will be enrolled. Infection status will be confirmed by rRT-PCR. Patients ≥ 1 year old will be randomised to < 48 hour and ≥ 48 hour treatment arms. Family members and neighbours will also be assessed by PCR and a basic reproductive number calculated (R0). Relevance These findings will address whether oseltamivir can affect illness duration and severity, affect transmission, incidence and resistance in high risk urban Asian settings where a pandemic is most likely to arise.

Influenza vaccination reduces the morbidity and mortality associated with influenza infection in at risk groups including the elderly and individuals with an impaired immune response, but is not totally protective in all recipient. Cytokines including type I interferons are known to play a key role in the innate immune response to virus infection and in the induction of the primary adaptive-immune response. Thus, we evaluated the safety of sublingual administration of IFNa and its effect on immune response to influenza vaccination in a randomized double-blind placebo controlled study in elderly institutionalized individuals.

The project is to evaluate immunogenicity, efficacy and tolerance of vaccination against influenza (seasonal and H1N1) in patients affected with systemic and autoimmune diseases.

This protocol will seek to enroll adult otherwise healthy subjects presenting with influenza-like illness (ILI). Subjects will enter the study based on listed inclusion/exclusion criteria, including a positive diagnostic test for influenza virus (IFV).

The objectives of the study are to demonstrate the effectiveness, safety and tolerability of multiple daily doses of inhaled PUR003, in comparison with placebo, in healthy adults experimentally inoculated with Influenza A/Wisconsin/67/2005 (H3N2) virus.