Active clinical trials for "Influenza, Human"

The Sanofi Pasteur Quadrivalent Influenza Vaccine (QIV) Pregnancy Registry will be a prospectively recruited pregnancy surveillance program designed to collect and analyze information on vaccine exposures, pregnancy outcomes, and fetal and offspring outcomes.

Overall, this study will determine (1) the effect of vaccine type (FluMist vs. TIV) on immunization rates, (2) assess the feasibility of school immunization clinics, and (3) inform a larger study to understand the effects of these two vaccines on reducing influenza.

Premature infants (born before 34 wk) are routinely vaccinated against RSV but vaccination rate against influenza are low in spite of national programs. Study goal is to evaluate the effectiveness of short intervention during RSV prophylaxis visit, planned to educate parents about the importance of influenza vaccination.

Background: - A challenge study exposes a person to a disease and allows researchers to study the disease through the body's healing process. An influenza challenge study that looks at different amounts of the flu virus can provide more information on the smallest amount needed to cause an infection. Researchers want to give one dose of the Influenza A H1N1 virus to healthy volunteers to see how the body responds to the virus. Objectives: To find the smallest dose of Influenza A H1N1 virus that may cause a mild to moderate flu infection in a healthy adult. To study how the body s immune system responds to the virus. Eligibility: Healthy volunteers at least 18 years of age. Participants must be willing to remain in isolation for a minimum of 9 days. Design: Participants will be admitted to a hospital inpatient isolation unit. They will be screened with a physical exam and medical history. They will also have heart and lung function tests. Blood, urine, and nasal swab/wash samples will be collected. Participants will receive a single nasal spray of the flu virus. They will stay on the inpatient unit for at least 9 days. Participants will be monitored for the length of their stay. They will have frequent blood tests and other procedures as needed. Participants will be allowed to go home once they have had two negative tests for the virus. The tests will be given on two consecutive days....

This surveillance study will include all consenting adults hospitalized with influenza (cases) at the SOS network of hospitals as well as influenza negative patients(controls), to assess vaccine effectiveness in each group. Both groups will be followed throughout their hospitalization and for 30 days post discharge to monitor severity of illness and outcomes following their illness.

The investigators purpose is to prospectively characterize influenza infections over a 3 year period in transplant patients using a registry system. The investigators plan to generate robust data on clinical features of upper and lower respiratory disease, antiviral therapy and its effects on disease outcome, as well as quantitative virologic data on shedding and antiviral resistance. The investigators also will study the long term sequelae of influenza infections and look at development of rejection.

The investigators conducted a 3-arm randomized controlled trial to test whether a low-cost planning intervention could increase influence vaccination rates.

Experimental and clinical studies in adults have reported that green tea catechins prevent influenza infection. In this clinical randomized study, the investigators aimed to determine the effects of gargling with green tea on the prophylaxis of influenza infection among high school teenagers.

The overall objective of this study is to provide ongoing assessment of the safety and effectiveness of seasonal and pandemic H1N1 vaccines in the prevention of ILI (influenza like illness), ILI-associated work absenteeism, and laboratory-confirmed influenza in a cohort of Canadian HCP (Health care providers). Given the uncertainties around the timing of the provision of seasonal influenza immunization to HCP for the 2009/10 influenza season, this study will focus on evaluation of safety and effectiveness of pandemic influenza immunization in Year 1 and evaluation of all recommended influenza vaccines in Years 2 and 3.

The study will be conducted using nasopharyngeal swab specimens collected prospectively from individuals suspected of having the signs and symptoms of an acute respiratory tract infection caused by a respiratory virus. A series of standard viral culture tests validated for routine use in the clinical laboratory, and/or a series of PCR-based Laboratory Developed Tests (PCR-LDT) validated by a central reference laboratory will be used to verify the performance of the investigational artus Influenza A/B RT-PCR test and the QIAGEN ResPlex II Advanced Panel test. From each specimen five (5) aliquots will be prepared: (a) one aliquot will be tested in real-time using the assigned viral culture reference methods; (b) one aliquot will be used to extract nucleic acid in real-time for investigational testing; (c) one aliquot of the specimen will be stored at --70C for subsequent shipment to the reference laboratory for PCR-LDT testing, (d) one aliquot will be archived at -70C for subsequent follow-up by the reference laboratory (e.g., bi-directional sequencing of positive specimens), and (e) any remaining specimen will be stored for the Fresh vs. Frozen Study. The extracted nucleic acid generated from the second aliquot (i.e., "b" above) will be split and subjected to testing by both the artus Influenza A/B RT-PCR test and the ResPlex II Advanced Panel test.