Active clinical trials for "Influenza, Human"

The goal of this study is to compare the efficacy of the surgical mask to the N95 respirator in protecting nurses from influenza in the hospital setting. The investigators propose a non-inferiority randomized controlled trial whereby nurses are randomized to either a surgical mask or an N95 respirator when caring for patients with febrile respiratory illness during the influenza season. The hypothesis is that the surgical mask offers similar protection against influenza to that of the N95. The specific objective of the study is to assess whether the rates of influenza (laboratory-confirmed by PCR and HAI assay), as well as secondary outcomes (influenza-like illness, work-related absenteeism, physician visits for respiratory illness, and lower respiratory infection), are similar among nurses using a surgical mask compared to those using an N95 respirator.

To describe the safety of the inactivated, split-virion influenza vaccine, 2008-2009 formulation. To evaluate the compliance, in terms of immunogenicity, of the inactivated, split-virion influenza vaccine 2008-2009 formulation with the requirements of the Committee for Human Medicinal Products (CHMP) Note for Guidance (NfG) CPMP/BWP/214/96.

The purpose of this study is to assess the safety and effectiveness (immune response) to a licensed H1N12009 influenza vaccine in adults when given at the same time or prior to the seasonal influenza vaccine. The study will enroll 300 adults (ages 20-59 years). Participants will be randomized into 2 groups. One group will receive one dose of a licensed H1N1 vaccine and one dose of the seasonal influenza vaccine at the same time; the second group will receive the seasonal influenza vaccine 3 weeks after receiving the licensed H1N12009 influenza vaccine. Study procedures include: medical history, blood samples and completing a memory aid. Participants will be involved in study related procedures for approximately 3-6 weeks depending upon the group assignment.

The purpose of this study is to characterize the safety and immunogenicity of the H1N1 (swine) flu vaccines GSK2340273A and GSK2340274A in adults 18 years of age or older. This protocol posting has been updated for sections impacted by the Protocol amendment 1, Sept 2009.

The purpose of this study is to see how the body reacts to different strengths of the H1N1 flu shot in persons infected with human immunodeficiency virus (HIV). This study will also compare how the CD4 count (cells that help fight disease) affects the body's response to the H1N1 flu shot. In this study, 2 strengths of the H1N1 flu shot will be given twice, about 3 weeks apart. The results of this study will help researchers find out if the different strengths of the H1N1 flu shot make the body produce H1N1 antibodies that are better at fighting H1N1 flu. About 240 HIV positive subjects, ages 18-64 years, will be asked to take part in this study. Study procedures include: blood sampling, physical exams, and use of memory aids to record temperature, medications and symptoms. The length of patient participation is about 7 months.

The purpose of the study is to evaluate the safety of GSK Biologicals' influenza vaccine. Elderly subjects were randomized in the primary study (NCT00760617) and will now receive the same vaccine for the third time. For this study the masking is "observer-blind" for elderly subjects and "open" for young adult subjects.

This multi-center study will be conducted in the United States with up to 80 healthy adult subjects. Subjects will be scheduled to receive a total of two (2) injections with 1 injection each administered. Subjects will be randomized according to a randomization scheme.

A Phase IV, Open Label, Multi-Centre Study to Evaluate the Safety and Tolerability Profile of CSL Limited's Influenza Virus Vaccine in a Paediatric Population Aged >= 6 Months to < 18 Years

This unblinded pilot study is intended to assess the feasibility of a larger double-blind, randomized control trial. For the larger trial the investigators are interested in understanding the relative benefits of vaccine and antiviral prophylaxis, the risk factors for influenza infection in healthy adults, and in assessing the safety and tolerability of seasonal antiviral prophylaxis in healthcare workers. The pilot study will be assessing the rate of infection with influenza and the rate of adherence to long-term zanamivir in 60 healthy volunteers.

The aim of the present dose ranging study is to evaluate the safety, tolerability and immunogenicity of two doses of twelve different formulations of a Cell Culture-Derived H5N1 Subunit Influenza Virus Vaccine, adjuvanted with MF59 or non-adjuvanted, given three weeks apart and followed by a booster dose after 12 months in healthy adults 18 to 40 years of age.