View clinical trials related to Influenza, Human.
Filter by:Influenza (flu) viruses change continuously, therefore also the parts of viruses used in influenza vaccines can vary from year to year. The current study is a phase IIIa clinical trial with a commercially available vaccine (Influvac®) supplied in pre filled syringes. The objective of this study is to investigate the immunogenicity and safety and tolerability of the changed influenza vaccine virus composition in two groups of subjects in good health: subjects aged >= 18 and <= 60 years and subjects >= 61 years of age (elderly).
The purpose of this observational study is to characterize individuals in Mexico who seek medical care for influenza-like illness (ILI) and Severe Acute Respiratory Infection (SARI), describe seasonal pattern of the pathological agents associated with ILI and SARI and to identify changes in severity of disease caused by a specific agent.
Zanamivir is a potent and highly selective inhibitor of the influenza virus neuraminidase. Intravenous (IV) zanamivir is being developed for treatment of hospitalized patients with influenza, especially for those patients who may be in greatest need of parenteral influenza antiviral agents. This study is a pharmacokinetic (PK) study to evaluate the safety/tolerability and pharmacokinetic profiles of IV zanamivir 300 milligrams (mg) and 600 mg in Chinese healthy subjects. Subjects will be randomized to receive either 300 mg or 600 mg IV zanamivir as a single dose followed by repeated dose every 12 hours (h) for 5 days. Subjects will be contacted or will return to study center for a follow-up visit, 7 days after the last dose or withdrawal from the study. Total number of subjects planned for enrollment will be 24 such that approximately 10 subjects complete dosing and critical assessments in each dose cohort. The total duration of the study will be approximately 6 weeks from screening to follow-up.
Background: - Researchers want to see if a new drug reduces flu disease in people treated with this drug versus a placebo. The drug has an antibody that may help the immune system fight the flu. Placebo is only sugar and water. All participants will get the flu virus. They may or may not develop flu symptoms. Objective: - To see if the drug CR6261 reduces flu disease in people treated with this drug versus a placebo. Eligibility: - Healthy nonsmokers ages 18 45. Design: - Participants will be screened under a separate protocol. - Participants must use contraception or abstinence for several weeks before and after the study. They must have no alcohol for 1 day before each visit. Any medicine must be approved by the study doctor until after follow-up. - Participants will stay in a hospital isolation unit for at least 10 days. - They will have: - Medical history - Physical exam - Blood and urine tests - Heart and lung test - Tests for drugs and alcohol - Throughout their stay, participants will: - Be closely watched by a medical team - Have nasal washes and swabs several times a day - Participants will have the flu virus sprayed in each nostril. - The next day, participants will get either study drug or placebo through a soft plastic tube placed in a vein by needle. It will take 2 hours. They will not know which they get. - Participants can go home after 10 days if they test negative for the flu 2 days in a row. - Participants will have daily questionnaires at home and 2 follow-up visits over 2 months.
The purpose of this study is to evaluate the safety and immunogenicity of GSK Biologicals' Quadrivalent Split Virion Influenza Vaccine Fluarix Tetra (2015 Southern hemisphere) in adults (18 to 60 years of age) and in the elderly (over 60 years of age).
This study will evaluate the safety, pharmacokinetics and effectiveness of a single dose of IV peramivir compared to a standard 5 day course of oral oseltamivir in the treatment of pediatric subjects with acute uncomplicated influenza.
The aims of the study are to a) identify individuals with a poor response to influenza vaccination and b) identify factors associated with a poor response to influenza vaccination.
The purpose of this study was to determine whether messages about 1. relative risk of vaccination vs. other activities and 2. strength of doctor's recommendation influenced parental intention to get own child vaccinated against human papillomavirus (HPV) or Influenza.
A Multicenter, Randomized, Double-blind, Active-controlled, Parallel Phase III
The purpose of the proposed study is to gather critical information that may be useful in designing effective prevention and treatment strategies for control of seasonal influenza and an influenza pandemic. In particular, the critical questions are related to the virus' ability to adapt to efficient replication and spread in humans. Influenza is a contagious respiratory illness caused by influenza A and B viruses. Influenza infections result in about 230,000 hospitalizations and 36,000 deaths annually in the United States. Children with cancer are more likely to have serious influenza and complications than those who have no underlying medical problems. They are also more likely to have prolonged influenza illnesses and to shed influenza viruses from their noses for long periods of time (sometimes for months). Recent studies suggest that influenza viruses may also be carried and shed from the gastrointestinal tract. New types of influenza viruses emerge frequently through mutations that occur when the viruses replicate. These mutations allow the virus to escape from killing by the immune system and are, in large part, responsible for seasonal epidemics of influenza that occur in the fall or winter months. It is possible that viruses can mutate when they are carried in the respiratory or gastrointestinal tracts for long periods, potentially giving rise to viruses that spread more easily to other persons, cause more severe disease, lead to new influenza epidemics or make the viruses resistant to drugs used to treat influenza. Researchers at St. Jude Children's Research Hospital want to learn about how influenza viruses mutate in immunocompromised children. They will investigate how long children with cancer carry influenza viruses in their nose, throat and gastrointestinal tract and the characteristics of any mutations that are found in these viruses.